The Secrets of Scotland Yard was a successful crime drama series, initially airing internationally between 1949 and 1951. Selected episodes finally came to a US radio network for a brief run much later in 1957 over the Mutual Broadcasting System. The series boasted well over 100 episodes, one of which, "The Bone From A Voice Box", apparently served as the prototype for another well remembered Towers Of London dramatic series, The Black Museum. In both series, well known actors were employed as host / narrator, Orson Welles in The Black Museum and Clive Brook here. In fact, the shows were so similar that some of the same actual Scotland Yard cases were dramatized for both series (with totally different scripts, and casts).