Inner Sanctum Mystery (1941–1952)
 
    Creeaking doors, sinister laughs, and psychological unease defined Inner Sanctum Mystery. This long-running radio series blended horror and dark humor in equal measure — inviting listeners into the “creaking door” where the mind was as dangerous as any ghost.
Anchored by Raymond Edward Johnson’s wry introductions, the show carved a space between pulp horror and psychological thriller. Its blend of eerie music, wordplay, and moral irony made it a defining series for American radio suspense.