Martin v. New England Telephone & Telegraph Co.

no denial of effective cross-examination for impeachment where the jury has sufficient information to appraise the bias and motives of the witness | no denial of effective cross-examination for impeachment where the jury has sufficient information to appraise the bias and motives of the witness | where defense knew of basic content of plea agreement with prosecution’s star witness before trial, “[k]nowledge of the precise details of the agreement was unlikely to add significantly to its impeachment potential” | no unrestricted right to present evidence to identify another as the culprit