House of Mystery #55

From DC's long-running anthology series comes this October 1956 issue, with a cover by Leonard Starr that sets up a genuinely unsettling scene: a sharply dressed, silver-haired man turns menacingly toward a chimpanzee who points an accusing finger at him, while a framed movie poster — "Now Showing: The Chimp Who's Almost Human!" — hints at the eerie connection between them. The bold caption "You Killed My Master" makes this one of the more memorable covers of the era. Inside, the issue promises four tales of the strange and uncanny, including "The Amazing Cholly the Chimp," "The Balloon Creatures," "I Turned Back Time," and "Unknown Sentinel" — plus details for DC's giant $5,000 prize contest.