A detective must solve a case where a girl was murdered in a room--and all the doors and windows were locked from the inside.

Preston Fosteras Bill Crane - Private Detective
Frank Jenksas Doc Williams
Carol Hughesas Emily Lou Martin
Barbara Pepperas Agatha Hogan
Astrid Allwynas Miss Brentino
Clarence Wilsonas Charles Frazee
Theodore von Eltzas Robert Westland
George Meekeras Richard Bolston
Russell Hicksas Mr. Woodbury
Selmer Jacksonas The Warden