THE JUDGE’S ERROR IN REFUSING TO GRANT A BRIEF ADJOURNMENT WHEN THE PEOPLE BELATEDLY OFFERED A REBUTTAL WITNESS HAD A “SPILL-OVER-EFFECT” TAINTING THE OTHER COUNTS; NEW TRIAL ORDERED (THIRD DEPT).

The Third Department, reversing defendant’s conviction, determined (1) the court erred in not granting the defense an adjournment when the People belatedly offered rebuttal testimony, and (2) the “spill-over-effect” of that error tainted the convictions:

The trial court may, in the exercise of its discretion, receive belatedly disclosed rebuttal testimony, ” ‘but before doing so, it must, upon application of the … . We therefore conclude that County Court erred when, after granting the prosecution’s request to offer rebuttal proof on Monday, it then denied defendant’s application for any adjournment before the prosecution called its rebuttal witness … . Given that proof of defendant’s guilt without the rebuttal witness’ testimony was “not overwhelming,” the error cannot be deemed harmless … .

In determining whether an error in the proceedings relating to one count requires reversal of the conviction of other jointly tried counts, we apply “[s]pillover analysis” and evaluate “the individual facts of the case, the nature of the error and its potential for prejudicial impact on the over-all outcome” … . “[I]f there is a reasonable possibility that the jury’s decision to convict on the tainted counts influenced its guilty verdict on the remaining counts in a meaningful way,” reversal is required (id. [internal quotation marks and citations omitted]). Because resolution of all three counts here hinged on the jury’s assessment of the victims’ credibility and the veracity of the defense claims, there is a reasonable possibility that the decimation of defendant’s alibi by the rebuttal evidence meaningfully influenced the jury’s guilty verdict on the 2018 count … . The rebuttal proof, received without affording defendant a brief adjournment to investigate, cast defendant’s alibi witness as unscrupulous and incredible. Under these unusual circumstances, we reverse defendant’s convictions and order a new trial on all counts … . People v Shaver, 2026 NY Slip Op 02895, Second Dept 5-7-26

Practice Point: An error affecting the proof of one count may have a “spill-over-effect” and taint the remaining counts, requiring a new trial.