236 A.2d 313 JOHN BERNARD KELLER, JR. v. STATE OF MARYLAND. No. 309, Initial Term, 1967.Court of Special Appeals of Maryland. Decided December 15, 1967. CONFESSIONS — Tests Of Voluntariness — Burden Of Proof — Statements Induced By Promise Of Immunity From Prosecution Held Inadmissible. The basic standard governing the admissibility of an extra-judicial statement […]