Calling Dr. Death is a 1943 Inner Sanctum mystery film. The "Inner Sanctum" franchise originated with a popular radio series and all of the films star Lon Chaney Jr. The movie stars Chaney Jr. and Patricia Morison, and was directed by Reginald Le Borg. Chaney Jr. plays a neurologist, Dr. Mark Steele, who loses memory of the past few days after learning that his wife has been brutally murdered. Aware of his wife's infidelity and believing he could be the killer, Steele asks his office nurse Stella Madden to help him recover his lost memories.

Inner Sanctum Mystery, also known as Inner Sanctum, is a popular old-time radio program that aired from January 7, 1941, to October 5, 1952. It was created by producer Himan Brown and was based on the imprint given to the mystery novels of Simon & Schuster. In all, 526 episodes were broadcast.