Two comedy legends trade jokes and laughs for thrills and chills when they visit “radio’s outstanding theater of thrills.” First, Bob Hope plays a man who has an appointment with a murderer in “Death Has a Shadow” (originally aired on CBS on May 5, 1949). Then, Milton Berle is an actor whose greatest role could keep him out of the electric chair in “Rave Notice” (originally aired on CBS on October 12, 1950).