The Inner Sanctum Mysteries was a popular radio program that aired on NBC from 1941 to 1952. It was a horror and suspense anthology series that featured a creaking door and a host known as Raymond, who introduced and closed each episode. The show was known for its creepy sound effects, eerie music, and macabre storylines. The series was based on a series of mystery novels written by Simon and Schuster's Inner Sanctum imprint. Each episode featured a different story, often involving murder, revenge, and the supernatural. The program had a number of notable guest stars, including Boris Karloff, Peter Lorre, and Orson Welles. The Inner Sanctum Mysteries was popular with audiences, and it spawned a number of imitators. The show was adapted for television in the 1950s, and a film version, Calling Dr. Death, was released in 1943. Despite its popularity, the show was also criticized for its use of violence and its often gruesome subject matter. However, it remains a classic of the radio era, and its creaking door and Raymond's ominous voice continue to be recognized by radio fans today. These episodes have been digitally remastered and are presented by SolvedMystery.com For more information about this and other old time radio programs please visit: https://www.solvedmystery.com ( https://www.solvedmystery.com/ ).