His star in Hollywood didn't burn bright for long, but Zachary Scott made memorable impressions as mysterious villains in movies like Mildred Pierce. In his one and only appearance on Suspense, Scott plays a man accused of bumping off an annoying neighbor in "Murder Off Key" (originally aired on CBS on November 15, 1945). Plus, he stars as the infamous Dr. Samuel Mudd - the man who treated John Wilkes Booth when the assassin was on the lam and later stood trial as a co-conspirator - in "The Prisoner of Shark Island" from Encore Theatre (originally aired on CBS on August 13, 1946).