Judge Cooke agreed that the murder count concerning the son was properly dismissed, but he would have affirmed the Appellate Division’s order granting a new trial on the daughter-manslaughter count. Judge Fuchsberg joined his opinion.
Cooke objected to the majority’s three-part framework: Chapman’s "harmless beyond a reasonable doubt" test for ordinary constitutional error, an automatic-reversal rule for a deprivation of the fundamental right to a fair trial, and a "significant probability of acquittal" test for nonconstitutional error. He believed that framework would create confusion about which test applies, especially where several errors cumulatively affect trial fairness.
In Cooke’s view, the harmless-beyond-a-reasonable-doubt standard should govern every error affecting substantial rights, whether the source is constitutional, statutory, or common law. A defendant’s right to be convicted only upon proof beyond a reasonable doubt can be undermined just as seriously by a supposedly nonconstitutional error as by a constitutional one, and labels should not determine the degree of appellate protection.
Cooke considered the assumed nonconstitutional errors especially serious. The truth-serum testimony could improperly bolster Rorech’s credibility, even though Rorech was the witness who recounted Crimmins’s alleged confession. The evidence that Colabella declined an immunity waiver could lead jurors to infer his and Crimmins’s guilt. And the prosecutor placed before the jury Colabella’s alleged statement about disposing of a body without producing Sullivan, the person purportedly told, then successfully opposed an adverse-inference instruction.
He also identified additional prejudicial material: evidence about Crimmins’s Bahamas trip with a married man and a purported organized-crime or Mafia angle. In his view, these matters were irrelevant or weakly relevant but likely damaging, particularly because they could make another prosecution witness’s claimed fear seem more believable.
Cooke rejected the majority’s effort to cure the trial by mentally excising the improper evidence and then reassessing the remaining record. Jurors heard the evidence in an emotionally charged trial, and improper material may color their evaluation of the rest of the case in ways an appellate court cannot reliably reconstruct from a written record. Because the errors affected substantial rights and could not be shown harmless beyond a reasonable doubt, Cooke concluded that Crimmins had not received a fair trial.