In State v. Robinson, 230 Conn. 591, 599, 646 A.2d 118 (1994) the Court found it probable that a correction officer who was present during the defendant's trial tailored his testimony regarding the defendant's alleged assault of another correction officer. Id., 601-602. In that case, however, the officer gave directly contradictory testimony after hearing the defendant's witnesses and, being a fellow officer of the victim, had a motive to shape his testimony. Id., 601-603. The court in Robinson also concluded that, because there was no pretrial testimony with which to rebut the correction officer's testimony, jury instructions, cross-examination and closing arguments could not obviate the harmful effects of the witness' tainted testimony. Id., 603.