State v. Kozisek ( 2015 )


Menu:
  •             Decisions      of the    Nebraska Court of Appeals
    STATE v. KOZISEK	805
    Cite as 
    22 Neb. Ct. App. 805
    State of Nebraska, appellee, v.
    Ryan E. Kozisek, appellant.
    ___ N.W.2d ___
    Filed March 24, 2015.      No. A-14-022.
    1.	 Criminal Law: Motions for New Trial: Appeal and Error. In a criminal
    case, a motion for new trial is addressed to the discretion of the trial court, and
    unless an abuse of discretion is shown, the trial court’s determination will not
    be disturbed.
    2.	 Trial: Evidence: Appeal and Error. The admission of demonstrative evidence
    is within the discretion of the trial court, and a judgment will not be reversed on
    account of the admission or rejection of such evidence unless there has been a
    clear abuse of discretion.
    3.	 Judgments: Words and Phrases. An abuse of discretion occurs when a trial
    court’s decision is based upon reasons that are untenable or unreasonable or if its
    action is clearly against justice or conscience, reason, and evidence.
    4.	 Trial: Testimony. Testimony in the form of an opinion or inference otherwise
    admissible is not objectionable because it embraces an ultimate issue to be
    decided by the trier of fact.
    5.	 Trial: Testimony: Witnesses. Opinion testimony by a lay witness is permit-
    ted only where it is rationally based on the perception of the witness and it is
    helpful to a clear understanding of his testimony or the determination of a fact
    in issue.
    6.	 ____: ____: ____. Opinion testimony by a lay witness is generally admissible
    where it is necessary and advisable as an aid to the jury, but it should be excluded
    whenever the point is reached at which the trier of fact is being told that which it
    is itself entirely equipped to determine.
    7.	 ____: ____: ____. A lay witness’ function is to describe what he has observed,
    and the trier of fact will draw a conclusion from the facts observed and repro-
    duced by the witness.
    8.	 Criminal Law: Trial: Juries: Evidence: Appeal and Error. In a jury trial of
    a criminal case, whether an error in admitting or excluding evidence reaches a
    constitutional dimension or not, an erroneous evidential ruling results in prejudice
    to a defendant unless the State demonstrates that the error was harmless beyond
    a reasonable doubt.
    9.	 Trial: Evidence: Verdicts: Juries: Appeal and Error. Evidentiary error is harm-
    less when improper admission of evidence did not materially influence the jury
    to reach a verdict adverse to substantial rights of the defendant. Harmless error
    review looks to the basis on which the trier of fact actually rested its verdict; the
    inquiry is not whether in a trial that occurred without the error a guilty verdict
    would surely have been rendered, but, rather, whether the actual guilty verdict
    rendered in the questioned trial was surely unattributable to the error.
    10.	 Jurisdiction: Prosecuting Attorneys: Indictments and Informations. A pros-
    ecutor is required to file an information listing the offense in the county with
    jurisdiction over that offense.
    Decisions of the Nebraska Court of Appeals
    806	22 NEBRASKA APPELLATE REPORTS
    11.	 Prosecuting Attorneys: Witnesses: Indictments and Informations. A prosecu-
    tor must endorse the names of witnesses known to the prosecutor at the time the
    information is filed.
    12.	 Witnesses: Indictments and Informations. The purpose of Neb. Rev. Stat.
    § 29-1602 (Reissue 2008) is to notify the defendant as to witnesses who may
    testify against the defendant and give the defendant an opportunity to investi-
    gate them.
    13.	 Rebuttal Evidence: Witnesses: Indictments and Informations. The require-
    ment of endorsement of the State’s witnesses on the information has no applica-
    tion to rebuttal witnesses.
    14.	 Trial: Rebuttal Evidence. Rebuttal evidence is confined to new matters first
    introduced by the opposing party and is not an opportunity to bolster, corroborate,
    reiterate, or repeat a case in chief.
    15.	 ____: ____. Rebuttal evidence is limited to that which explains, disproves, or
    counteracts evidence introduced by the adverse party.
    16.	 Trial: Rebuttal Evidence: Appeal and Error. The abuse of discretion standard
    is applied to an appellate court’s review of a trial court’s ruling on the admissibil-
    ity of rebuttal testimony.
    17.	 Trial: Juries: Evidence. Demonstrative exhibits are defined by the purpose for
    which they are offered at trial—to aid or assist the jury in understanding the evi-
    dence or issues in a case.
    18.	 Trial: Evidence: Testimony: Proof. Demonstrative exhibits are admissible if
    they supplement the witness’ spoken description of the transpired event, clarify
    some issue in the case, and are more probative than prejudicial.
    19.	 ____: ____: ____: ____. Demonstrative exhibits are inadmissible when they
    do not illustrate or make clearer some issue in the case; that is, when they are
    irrelevant, or when the exhibit’s character is such that its probative value is sub-
    stantially outweighed by the danger of unfair prejudice.
    20.	 Trial: Evidence: Testimony. Demonstrative exhibits are relevant only because of
    the assistance they give to the trier of fact in understanding other real, testimo-
    nial, and documentary evidence.
    21.	 Double Jeopardy: Evidence: New Trial: Appeal and Error. The Double
    Jeopardy Clause does not forbid a retrial so long as the sum of all the evidence
    admitted by a trial court, whether erroneously or not, would have been sufficient
    to sustain a guilty verdict.
    Appeal from the District Court for York County: Alan G.
    Gless, Judge, and J. Patrick Mullen, Judge, Retired. Reversed
    and remanded for a new trial.
    Mark E. Rappl for appellant.
    Jon Bruning, Attorney General, and Nathan A. Liss for
    appellee.
    Irwin, Riedmann, and Bishop, Judges.
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	807
    Cite as 
    22 Neb. Ct. App. 805
    Riedmann, Judge.
    INTRODUCTION
    Ryan E. Kozisek was convicted in the district court for
    York County of intentional child abuse resulting in death. He
    appeals, arguing that his motion for new trial should have been
    granted because of the erroneous admission of opinion testi-
    mony and improper rebuttal evidence. He also claims that the
    district court erred in overruling his objection to a demonstra-
    tive video. We agree that the district court abused its discretion
    in overruling the motion for new trial, because the admis-
    sion of the opinion testimony constituted prejudicial error. We
    therefore reverse, and remand for a new trial.
    BACKGROUND
    Kozisek was charged with intentional child abuse result-
    ing in death following the death of his 4-month-old daughter,
    Kaley Kozisek (Kaley). Kozisek married Kassandra Roper
    (Kassandra) in 2008. Their first daughter was born in January
    2009, and their second daughter, Kaley, was born in September
    2010. Kozisek was disappointed when he and Kassandra
    found out their second child would be a girl, and he became
    “[m]ore stressed [and d]epressed” after Kaley was born. He
    did not understand why Kaley cried so much, and Kassandra
    recalled him saying that he “hated” Kaley. He also told a
    coworker that he “hated” Kaley and told another coworker
    that Kaley cried so much that he felt like “shaking [her] to the
    point where [she] would stop crying.”
    Kaley had “milk and soy protein intolerance [and] spit up
    a lot” during feedings. Kassandra described her as a “[f]ussy”
    eater, but otherwise, as generally healthy. Kaley contracted
    the stomach flu in early January 2011, however, so Kassandra
    called the pediatrician because Kaley was vomiting. Around
    that same time, Kassandra noticed an indentation on the back
    of Kaley’s head and mentioned it to the pediatrician when
    Kaley was in her office on January 17. Kaley also saw her
    pediatrician on January 21 for her 4-month checkup. At that
    visit, she was bright-eyed, very alert, developing appropriately,
    and breathing comfortably. According to Kassandra, Kaley
    was also “fine” on January 22 and 23 and played with toys,
    Decisions of the Nebraska Court of Appeals
    808	22 NEBRASKA APPELLATE REPORTS
    giggled, and smiled. Kaley was still fussy during feedings, but
    according to Kassandra, that was normal for her.
    Kozisek quit his job in January 2011, forcing Kassandra to
    find employment while Kozisek stayed home with his daugh-
    ters. On Kassandra’s first day of work, January 24, she got up
    around 3 a.m., and before leaving for work, she checked on
    Kaley, who was sleeping “perfectly fine.” When she called
    home around 10 a.m., Kozisek said Kaley was “breathing kind
    of funny” and put the telephone up to Kaley so Kassandra
    could hear her breathing. Kassandra thought Kaley sounded
    “a little bit different,” but she was not too concerned and said
    she would look at Kaley when she got home around 1 p.m. At
    12:18 p.m., Kozisek called the 911 emergency dispatch service
    and reported that Kaley was barely breathing, limp, and start-
    ing to turn blue.
    When emergency medical services initially arrived, Kaley
    was unresponsive and did not have a pulse. She was initially
    taken to a hospital in York, Nebraska, and then shortly thereaf-
    ter, she was “life-flighted” to a hospital in Omaha, Nebraska.
    Kaley died the following day.
    At trial, the State called several expert witnesses who tes-
    tified that Kaley’s injuries were not caused accidentally. An
    ophthalmologist who examined Kaley at the hospital in Omaha
    observed extensive hemorrhaging in the back of her eyes. He
    opined that the cause of Kaley’s injuries was nonaccidental
    trauma and could think of no other causes that would explain
    Kaley’s retinal hemorrhaging.
    A child abuse pediatrician also examined Kaley at the hos-
    pital in Omaha. She noticed that Kaley’s eyes were fixed and
    widely dilated, which is an indication of severe brain injury.
    Because Kaley’s eyes were so widely dilated, the child abuse
    pediatrician could look through the pupils and see the back
    of Kaley’s eyes, where she “very clearly” observed blood. A
    CT scan showed evidence of severe brain injury. The back of
    Kaley’s skull was depressed, an injury that is referred to as
    a “ping pong skull fracture” (ping pong fracture), because it
    looks like the indentation that occurs when “a ping pong ball
    [is] pushed in.” Kaley also had bleeding between her brain and
    skull all around, including fresh blood, and severe swelling to
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	809
    Cite as 
    22 Neb. Ct. App. 805
    the brain. According to the child abuse pediatrician, it was not
    the blood or blood pressure in Kaley’s brain that caused her to
    be ill, but her brain had been damaged by the same force that
    caused the bleeding. In the child abuse pediatrician’s opin-
    ion, Kaley suffered from abusive head trauma and the injury
    occurred after the night of January 23, 2011.
    Finally, the coroner’s physician who performed the autopsy
    on Kaley on January 26, 2011, testified during the State’s
    case in chief. He observed a cluster of bruises on the top of
    Kaley’s head, as well as fresh blood, which is a manifestation
    of blunt force trauma. He also observed a subdural hemor-
    rhage and subarachnoid hemorrhage, meaning she had bleed-
    ing in the connective tissues between the scalp and the brain.
    He further found bleeding around the optic nerves in both of
    her eyes extending into the retinas. The coroner’s physician
    concluded that parts of the subdural hematoma were at least
    3 days old; however, the subarachnoid hemorrhage, retinal
    hemorrhages, and bruising on the top of the head were no
    more than 1 day old. The coroner’s physician opined that
    Kaley’s cause of death was blunt force trauma to the head
    and brain.
    Kassandra was called as a witness for the State. During her
    direct examination, the following exchange occurred:
    Q Now during the interview with the state patrol
    . . . you continually denied that - - 100 percent that . . .
    Kozisek would have anything to do with the injuries to
    Kaley; is that correct?
    A I remember saying that, yes.
    Q Again, I don’t know how many times that you denied
    it but it was numerous times?
    A Correct.
    Q And this was during your interview on the 24th of
    January, 2011?
    A Correct.
    Q Have you come to change your opinion?
    [Defense counsel]: Your Honor, objection. Two rea-
    sons. One, it calls for an improper opinion. Two, it’s an
    ultimate issue for the jury to decide.
    THE COURT: Overruled.
    Decisions of the Nebraska Court of Appeals
    810	22 NEBRASKA APPELLATE REPORTS
    Q . . . Have you changed your opinion on whether or
    not the injuries were caused by [Kozisek]?
    A Yes, I have.
    Q And why was it that you continued to say that he
    didn’t - - or look - - reflecting back on the 24th?
    A I was in shock. I honestly did not know what hap-
    pened. I thought being with somebody for 10 years,
    how would they be able to hurt their own child. I never
    thought that he would do anything like that.
    Kassandra said that she and her older daughter moved out
    of the family home in March 2011 and that she ultimately
    dissolved her marriage with Kozisek and moved to a differ-
    ent city.
    Kozisek did not testify at trial, but his prior statements were
    introduced through several witnesses. He denied injuring Kaley
    and asserted that her death was caused by a series of tragic
    accidents, beginning with the ping pong fracture on the back
    of her head. He repeatedly claimed that while he was at home
    with his daughters on January 24, the older daughter fell or
    jumped off of a chair onto Kaley, which caused Kaley’s breath-
    ing to change.
    At trial, Dr. Janice Ophoven testified in Kozisek’s defense.
    She is a medical doctor specializing in forensics and pedi-
    atric forensics. In Dr. Ophoven’s opinion, there was insuf-
    ficient evidence to conclude that Kaley’s injuries and death
    were the result of abuse. Dr. Ophoven believed that the ping
    pong fracture put pressure on the veins in the back of Kaley’s
    head, which increased intercranial pressure. Increased inter-
    cranial pressure is also associated with bleeding in the eyes.
    Dr. Ophoven believed that Kaley’s vomiting and fussiness in
    the days leading up to her death were evidence of complica-
    tions from increased intercranial pressure and that the older
    daughter’s falling onto Kaley potentially caused a spike in
    pressure that shut down circulation to her brain and caused
    cardiac arrest.
    Dr. Ophoven also testified that in the last 10 years, there
    has been a shift in the literature and science involving what is
    known as shaken baby syndrome. She claimed that it has been
    discovered that no matter how hard or how long you shake a
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	811
    Cite as 
    22 Neb. Ct. App. 805
    baby, the amount of force that can be generated is insufficient
    to cause the brain injury and retinal hemorrhaging that is so
    commonly seen in abused children. As a result, according to
    Dr. Ophoven, “the scientific basis for the original theory has
    now become controversial.”
    After the conclusion of Dr. Ophoven’s testimony, the State
    indicated its intention to call a rebuttal witness. Kozisek
    objected, but his objection was overruled. The State then called
    Dr. Daniel Davis, a forensic pathologist and deputy medical
    examiner in Oregon, to testify on rebuttal. Dr. Davis testified
    that he disagreed with Dr. Ophoven’s opinion. He believed that
    the ping pong fracture was unrelated to Kaley’s death and that
    her vomiting was associated with her continued feeding issues.
    If the fracture were crimping the central vein in the back
    of Kaley’s head as Dr. Ophoven claimed, Dr. Davis said he
    would expect to see symptoms immediately after the fracture
    occurred, but the fracture was nearly healed.
    Dr. Davis testified that what is present in this case are the
    classic signs of a shaken baby. First, he disagreed with the
    notion that Kaley experienced cardiac arrest, and instead, he
    asserted that because she was unresponsive and not breathing
    but her heart was still beating, she was in respiratory arrest,
    which occurs as a result of interference with the brainstem.
    In addition, when a baby is shaken, the brain rotates inside
    of the head, which causes the veins on both sides of the cen-
    tral vein to tear and bleed over the surface of the brain and
    into the subdural space, which is exactly what was seen in
    Kaley. Moreover, what is seen in virtually all shaken baby
    cases is significant hemorrhage into the eyes, as was seen in
    Kaley’s eyes.
    Dr. Davis explained that when a baby is shaken, the brain
    is “basically stirred,” and as a result, millions of nerve fibers
    throughout the brain are torn at a microscopic level. That causes
    the signals in the brainstem controlling alertness, breathing,
    and heart rate to be lost, which causes sudden unresponsive-
    ness, changes to breathing for a few minutes, and then the ces-
    sation of breathing. He said that “it happens identically every
    time” because the effect on the brainstem is so profound in
    shaking due to shearing at the microscopic level.
    Decisions of the Nebraska Court of Appeals
    812	22 NEBRASKA APPELLATE REPORTS
    To help illustrate Dr. Davis’ explanation of the effects of
    shaking a baby, the State played a demonstrative video that
    Dr. Davis helped create approximately 10 years ago. Kozisek
    objected to the video, but his objections were overruled. Dr.
    Davis said that he was very heavily involved in the production
    of the video because he was the source of the accuracy of the
    medical information contained in it. He said that he has used
    the video about a dozen previous times in court and that it
    has also been used by other medical professionals in a variety
    of courtrooms throughout the country. The video is a graphic
    animation of the injuries that occur in a baby’s brainstem when
    the baby is shaken. Dr. Davis described the video as “a demon-
    strative aid to help [him] explain the mechanism of injury
    in shaking.”
    Dr. Davis testified that the difference between his opinion
    on intercranial pressure and Dr. Ophoven’s was “cause and
    effect.” He believes that the increase in Kaley’s intercranial
    pressure was an effect of the injuries she sustained, but Dr.
    Ophoven believed the pressure increase caused Kaley’s inju-
    ries. According to Dr. Davis, shaking a baby injures the brain,
    and the brain’s major reaction to injury is swelling. When the
    brain swells, intercranial pressure increases. Dr. Davis stated
    that Dr. Ophoven’s opinion that increased pressure somehow
    caused everything else to happen was “backwards.” He also
    stated that he could not “buy in” to the theory that the older
    daughter’s falling on Kaley, which he noted was not even a
    substantiated fact, caused Kaley’s death.
    Dr. Davis was also asked to respond to Dr. Ophoven’s claim
    that shaken baby syndrome is now a controversial diagnosis.
    He explained that “rather than just calling everything shaken
    baby,” the suggestion now, when it is unclear whether there
    was also trauma, is to call it “abusive head trauma,” which
    encompasses shaking, shaking with impact, and impact. The
    goal of this new position by physicians was not to detract from
    shaking as a mechanism of abusive head trauma but to broaden
    the terminology to account for the multitude of injuries that
    result from abusive head trauma. Thus, physicians are using the
    term “abusive head trauma” instead of “shaken baby” because
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	813
    Cite as 
    22 Neb. Ct. App. 805
    it is more inclusive of all of the mechanisms that can happen
    to children.
    After the conclusion of evidence and deliberation, the
    jury found Kozisek guilty of intentional child abuse result-
    ing in death. Kozisek filed a motion for new trial challenging
    Kassandra’s opinion testimony, the State’s rebuttal expert, and
    use of the demonstrative video. The district court found that
    the jury could infer Kassandra’s opinion of Kozisek’s guilt
    from her testimony and allowing this testimony was error.
    However, because there was abundant evidence adduced by
    the State to show Kozisek’s guilt, the court found the error
    harmless. It also found no error in admitting the State’s rebut-
    tal expert or the demonstrative video. Accordingly, the district
    court denied Kozisek’s motion for new trial. Kozisek was sen-
    tenced to 35 to 50 years’ incarceration. He has now appealed
    to this court.
    ASSIGNMENTS OF ERROR
    Kozisek assigns that the district court erred in (1) denying
    his motion for new trial after concluding that the admission
    of Kassandra’s opinion testimony was improper but harmless
    error, (2) denying his motion for new trial because the State’s
    rebuttal evidence did not respond to new matters introduced
    by him, and (3) overruling his objection to the demonstra-
    tive video.
    STANDARD OF REVIEW
    [1] In a criminal case, a motion for new trial is addressed
    to the discretion of the trial court, and unless an abuse of
    discretion is shown, the trial court’s determination will not
    be disturbed. State v. Ramirez, 
    287 Neb. 356
    , 
    842 N.W.2d 694
    (2014).
    [2] The admission of demonstrative evidence is within the
    discretion of the trial court, and a judgment will not be
    reversed on account of the admission or rejection of such evi-
    dence unless there has been a clear abuse of discretion. State
    v. Gutierrez, 
    272 Neb. 995
    , 
    726 N.W.2d 542
    (2007), abrogated
    on other grounds, State v. Thorpe, 
    280 Neb. 11
    , 
    783 N.W.2d 749
    (2010).
    Decisions of the Nebraska Court of Appeals
    814	22 NEBRASKA APPELLATE REPORTS
    [3] An abuse of discretion occurs when a trial court’s deci-
    sion is based upon reasons that are untenable or unreasonable
    or if its action is clearly against justice or conscience, reason,
    and evidence. State v. 
    Ramirez, supra
    .
    ANALYSIS
    Opinion Testimony.
    Kozisek asserts that the district court erred in denying his
    motion for new trial after concluding that Kassandra’s opinion
    testimony was improper but harmless error. He claims allowing
    Kassandra to infer her opinion of Kozisek’s guilt was not only
    erroneous, but materially influenced the jury’s decision.
    The district court concluded that although Kassandra did
    not specifically give her opinion, the implication that she now
    believes Kozisek caused Kaley’s injuries is clear from her tes-
    timony. Kozisek asserts that allowing Kassandra to state her
    opinion of his guilt was error. We agree.
    [4-7] Testimony in the form of an opinion or inference
    otherwise admissible is not objectionable because it embraces
    an ultimate issue to be decided by the trier of fact. Neb.
    Rev. Stat. § 27-704 (Reissue 2008). Opinion testimony by
    a lay witness is permitted only where it is rationally based
    on the perception of the witness and it is helpful to a clear
    understanding of his testimony or the determination of a fact
    in issue. See Neb. Rev. Stat. § 27-701 (Reissue 2008). It is
    generally admissible where it is necessary and advisable as an
    aid to the jury, but it should be excluded whenever the point
    is reached at which the trier of fact is being told that which it
    is itself entirely equipped to determine. State v. William, 
    231 Neb. 84
    , 
    435 N.W.2d 174
    (1989). A lay witness’ function is to
    describe what he has observed, and the trier of fact will draw
    a conclusion from the facts observed and reproduced by the
    witness. See 
    id. In the
    present case, Kassandra’s testimony was not objec-
    tionable for the reason that it embraced the ultimate issue in
    the case, that is, Kozisek’s guilt. However, her opinion failed
    to meet the § 27-704 requirement that it be “otherwise admis-
    sible” because it lacked sufficient foundation to show that her
    testimony was rationally based on her perception. The only
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	815
    Cite as 
    22 Neb. Ct. App. 805
    information elicited from Kassandra was that she initially did
    not think Kozisek had anything to do with Kaley’s injuries,
    but that she has since changed her opinion. We do not know,
    however, the basis for her change in opinion. This leaves
    the record in doubt as to whether her belief of Kozisek’s
    guilt is an expression of her actual knowledge or merely an
    expression of her opinion, which is impermissible. See State
    v. Jacob, 
    242 Neb. 176
    , 
    494 N.W.2d 109
    (1993). Moreover,
    Kassandra’s opinion would not be helpful to the fact finder
    because she was merely drawing a conclusion based on the
    same evidence that was being presented to the jury. We there-
    fore agree with the district court that allowing Kassandra to
    testify that she has changed her opinion regarding Kozisek’s
    guilt was error.
    [8,9] Having concluded that the district court erred in allow-
    ing Kassandra’s testimony as to her opinion of Kozisek’s guilt,
    we must now determine whether such error was harmless. In
    a jury trial of a criminal case, whether an error in admitting
    or excluding evidence reaches a constitutional dimension or
    not, an erroneous evidential ruling results in prejudice to a
    defend­ant unless the State demonstrates that the error was
    harmless beyond a reasonable doubt. State v. Cox, 
    231 Neb. 495
    , 
    437 N.W.2d 134
    (1989). Evidentiary error is harmless
    when improper admission of evidence did not materially influ-
    ence the jury to reach a verdict adverse to substantial rights of
    the defendant. State v. Freemont, 
    284 Neb. 179
    , 
    817 N.W.2d 277
    (2012). Harmless error review looks to the basis on which
    the trier of fact actually rested its verdict; the inquiry is not
    whether in a trial that occurred without the error a guilty ver-
    dict would surely have been rendered, but, rather, whether the
    actual guilty verdict rendered in the questioned trial was surely
    unattributable to the error. 
    Id. Here, the
    implication from Kassandra’s testimony that she
    changed her opinion is that she now, at a minimum, questions
    whether Kozisek had something to do with Kaley’s injuries
    or, worse, now believes that he intentionally caused them.
    Who better than Kozisek’s then-wife and mother of his chil-
    dren would know whether Kozisek was capable of the crime
    with which he was charged? Given the spousal relationship
    Decisions of the Nebraska Court of Appeals
    816	22 NEBRASKA APPELLATE REPORTS
    between Kassandra and Kozisek, we cannot say that the ver-
    dict rendered against Kozisek was surely unattributable to
    her testimony. Although Kassandra was not an expert, the
    weight of her opinion differed because of her relationship
    with Kozisek. See Simon v. Drake, 
    285 Neb. 784
    , 
    829 N.W.2d 686
    (2013).
    In Simon v. Drake, the Nebraska Supreme Court recognized
    the differing weight a witness’ testimony may have depend-
    ing upon his relationship with the party against whom he is
    testifying. In Simon v. Drake, a medical malpractice action,
    the defendant was allowed to elicit testimony from one of
    the plaintiff’s treating physicians that the needle size used
    by the defendant was within the range of the proper needle
    size for the procedure at issue. He had not been designated
    as an expert. The trial court found this to be harmless error,
    and on appeal, we agreed. Upon further review, the Nebraska
    Supreme Court reversed. It reasoned that the treating physi-
    cian’s testimony was not substantially similar to the testimony
    of the parties’ designated experts because “[c]ompared to the
    testimony of a hired expert, a juror was likely to give great
    weight to [the treating physician’s] opinion because he was
    [the plaintiff’s] treating physician and testifying as an expert
    against his own patient.” 
    Id. at 794,
    829 N.W.2d at 693. The
    court went on to explain that the relationship between a patient
    and a treating physician was one of confidence and trust and
    that therefore, the jury would have given significant weight
    to that testimony. The court stated that it could not conclude
    that the weight the jury likely would have given to the treating
    physician’s opinions was not the “tipping point” for finding in
    favor of the defendant, especially since the defendant’s only
    expert conceded he would have used a different needle size. 
    Id. at 796,
    829 N.W.2d at 694.
    Here, we determine that the jury would have given signifi-
    cant weight to Kassandra’s testimony, given the spousal rela-
    tionship between her and Kozisek. And we cannot conclude
    that the weight given to this testimony was not the “tipping
    point” for finding against Kozisek, especially when the medi-
    cal evidence was conflicting and complex. See 
    id. We therefore
    conclude that the State failed to prove beyond a reasonable
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	817
    Cite as 
    22 Neb. Ct. App. 805
    doubt that the admission of Kassandra’s opinion of Kozisek’s
    involvement in Kaley’s death was harmless error. Accordingly,
    we reverse the conviction.
    Rebuttal Evidence.
    Although the foregoing determination resolves this appeal,
    we nonetheless consider the remaining assignment of error,
    because it presents issues which are likely to reoccur in the
    new trial we must order, as further explained below.
    Kozisek argues that the district court erred in denying his
    motion for new trial because the State’s rebuttal evidence was
    improper. He asserts that it was unfair for the State to call an
    unendorsed rebuttal expert and that doing so denied him an
    opportunity to depose and effectively confront the witness.
    Kozisek also claims that the State’s rebuttal expert did not
    respond to new matters introduced by his expert; rather, the
    State used its rebuttal expert to improperly bolster and reiterate
    its case in chief. We disagree.
    [10-12] Neb. Rev. Stat. § 29-1602 (Reissue 2008) requires
    a prosecutor to file an information listing the offense in the
    county with jurisdiction over that offense. The prosecutor must
    also endorse the names of witnesses known to the prosecutor
    at the time of the filing. See 
    id. The purpose
    of § 29-1602
    is to notify the defendant as to witnesses who may testify
    against the defendant and give the defendant an opportunity to
    investigate them. State v. Molina, 
    271 Neb. 488
    , 
    713 N.W.2d 412
    (2006).
    [13] But it has long been the rule in this state that the
    requirement of endorsement of the State’s witnesses on the
    information has no application to rebuttal witnesses. 
    Id. See, also,
    State v. Canbaz, 
    259 Neb. 583
    , 
    611 N.W.2d 395
    (2000);
    State v. Pratt, 
    197 Neb. 382
    , 
    249 N.W.2d 495
    (1977); Griffith
    v. State, 
    157 Neb. 448
    , 
    59 N.W.2d 701
    (1953). Thus, the State
    was not required to provide Kozisek with Dr. Davis’ name
    prior to trial.
    [14-16] Kozisek also claims that Dr. Davis’ testimony did
    not respond to new matters raised by Dr. Ophoven. Rebuttal
    evidence is confined to new matters first introduced by the
    opposing party and is not an opportunity to bolster, corroborate,
    Decisions of the Nebraska Court of Appeals
    818	22 NEBRASKA APPELLATE REPORTS
    reiterate, or repeat a case in chief. State v. Sandoval, 
    280 Neb. 309
    , 
    788 N.W.2d 172
    (2010). It is limited to that which
    explains, disproves, or counteracts evidence introduced by the
    adverse party. 
    Id. The abuse
    of discretion standard is applied
    to an appellate court’s review of a trial court’s ruling on the
    admissibility of rebuttal testimony. 
    Id. An argument
    similar to Kozisek’s was proffered and rejected
    by the Nebraska Supreme Court in State v. Swillie, 
    218 Neb. 551
    , 
    357 N.W.2d 212
    (1984). There, the defendant contended
    that the rebuttal testimony should have been presented in the
    State’s case in chief because it only corroborated the State’s
    other witnesses. The Supreme Court iterated its prior hold-
    ing that in a criminal prosecution, any testimony, otherwise
    competent, which tends to dispute the testimony offered on
    behalf of the accused as to a material fact is proper rebuttal
    testimony. See 
    id. Thus, the
    court concluded that because the
    testimony tended to dispute testimony offered on behalf of
    the defendant as to a material fact, it was properly offered in
    rebuttal. 
    Id. Similarly, in
    the present case, Dr. Davis disputed Dr.
    Ophoven’s testimony as to a number of material facts, includ-
    ing Kaley’s cause of death and whether shaken baby syndrome
    is now a controversial diagnosis. Further, Dr. Ophoven claimed
    that the cause of death in cases such as this should be deter-
    mined by a forensic pathologist, and Dr. Davis was the only
    one of the State’s expert witnesses who was a forensic patholo-
    gist. Accordingly, we cannot find that the district court abused
    its discretion in allowing Dr. Davis to testify as a rebuttal
    witness. Therefore, Kozisek’s motion for new trial was prop-
    erly denied.
    Demonstrative Video.
    Finally, Kozisek argues that the district court erred in over-
    ruling his objection to the demonstrative video played during
    Dr. Davis’ testimony. We find no merit to this argument.
    [17-20] Demonstrative exhibits are defined by the pur-
    pose for which they are offered at trial—to aid or assist
    the jury in understanding the evidence or issues in a case.
    Decisions   of the  Nebraska Court of Appeals
    STATE v. KOZISEK	819
    Cite as 
    22 Neb. Ct. App. 805
    State v. Pangborn, 
    286 Neb. 363
    , 
    836 N.W.2d 790
    (2013).
    Demonstrative exhibits are admissible if they supplement the
    witness’ spoken description of the transpired event, clarify
    some issue in the case, and are more probative than prejudi-
    cial. 
    Id. Conversely, they
    are inadmissible when they do not
    illustrate or make clearer some issue in the case; that is, when
    they are irrelevant, or when the exhibit’s character is such that
    its probative value is substantially outweighed by the danger
    of unfair prejudice. 
    Id. They are
    relevant only because of the
    assistance they give to the trier of fact in understanding other
    real, testimonial, and documentary evidence. 
    Id. In the
    present case, the video was used to assist Dr. Davis
    in explaining what happens when a baby is shaken. Dr. Davis
    disagreed with Dr. Ophoven’s theory that the ping pong frac-
    ture was crimping the central vein in Kaley’s head and that
    the older daughter’s falling on Kaley threw off her equilib-
    rium and caused her to suffer cardiac arrest. First, Dr. Davis
    opined that Kaley suffered respiratory arrest, not cardiac
    arrest, because although she was unresponsive and not breath-
    ing, her heart was still beating. He believed that this occurred
    as a result of interference with her brainstem from abusive
    head trauma. He explained that shaking a baby causes the
    brain to move around in the head which results in the tear-
    ing of nerve fibers at a microscopic level. The signals in the
    brainstem that control alertness, breathing, and heart rate are
    lost, which is why the child suddenly becomes unresponsive
    and stops breathing. The video visually depicted the above-
    described testimony and assisted with Dr. Davis’ explanation
    of his opinion on Kaley’s cause of death and why he disagreed
    with Dr. Ophoven.
    With respect to creation of the video, Dr. Davis testified
    that for the last 15 or more years, he has operated a company
    that makes graphics and demonstrative animation aids to help
    people understand difficult medical concepts. He commis-
    sioned the video to be made approximately 10 years prior and
    was heavily involved in its creation as the source of the accu-
    racy of the medical evidence contained in it. It was repeatedly
    made clear to the jury during Dr. Davis’ testimony that the
    Decisions of the Nebraska Court of Appeals
    820	22 NEBRASKA APPELLATE REPORTS
    animation in the video was not intended to represent Kaley,
    but, rather, the video simply depicted what generally happens
    in a baby’s brain when it is shaken.
    Based on the foregoing, we find no abuse of discretion in
    the district court’s conclusion that the video could assist the
    jury in understanding Dr. Davis’ testimony and clarifying an
    issue in the case. This assignment of error is without merit.
    Double Jeopardy.
    [21] Having found reversible error in the admission of
    Kassandra’s opinion testimony, we must determine whether
    the totality of the evidence admitted by the district court was
    sufficient to sustain Kozisek’s conviction. If it was not, then
    the concepts of double jeopardy would not allow a remand for
    a new trial. See State v. Borst, 
    281 Neb. 217
    , 
    795 N.W.2d 262
    (2011). The Double Jeopardy Clause does not forbid a retrial
    so long as the sum of all the evidence admitted by a trial court,
    whether erroneously or not, would have been sufficient to sus-
    tain a guilty verdict. State v. 
    Borst, supra
    .
    After reviewing the record, we conclude that the evidence
    presented at trial, including the evidence that should have been
    excluded, was sufficient to support Kozisek’s conviction. As
    such, we conclude that double jeopardy does not preclude a
    remand for a new trial on the charge of intentional child abuse
    resulting in death. We therefore remand the cause to the district
    court for a new trial.
    CONCLUSION
    We conclude that the district court erred when it denied
    Kozisek’s motion for new trial because the admission of
    Kassandra’s opinion regarding Kozisek’s involvement in
    Kaley’s death was prejudicial error. We reverse the decision of
    the district court and remand the cause to the district court for
    a new trial.
    R eversed and remanded for a new trial.