Name: The Case of the Imposter Mystery
Released: Monday, May 16, 1955
Cast: Ronald Howard, Howard Marion-Crawford, Archie Duncan, Richard Larke, Basil Dignam

Episode

The Case of the Imposter Mystery

Adaptation: 1954 Sheldon Reynolds TV
Episode: 29
Airdate: 16 May 1955
IMDb: The Case of the Imposter Mystery (link not verified)

Previous: The Case of the Jolly Hangman
Next: The Case of the Eiffel Tower

Cast
Ronald Howard	as Sherlock Holmes
Howard Marion-Crawford	as Dr. John H. Watson
Archie Duncan	as Insp. G. Lestrade
Richard Watson	as Constable Hennesie
Bob Cunningham	as Tony Simmons / Imposter
Basil Dignam	as Sir Arthur Tredley
Richard Larke	as Sgt. Wilkins