277 A.2d 325 Commonwealth v. Camm, Appellant. Supreme Court of Pennsylvania.January 22, 1970. May 13, 1971. Criminal Law — Evidence — Privilege against self-incrimination — Defendant testifying for limited purpose — Scope of cross-examination — Discretion of trial judge — Voluntariness of confession — Defendant required repeatedly to claim his privilege against self-incrimination — Mental […]