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 Foster
as Bill Crane - Private Detective
Frank Jenks
as Doc Williams
Carol Hughes
as Emily Lou Martin
Barbara Pepper
as Agatha Hogan
Astrid Allwyn
as Miss Brentino
Clarence Wilson
as Charles Frazee
Theodore von Eltz
as Robert Westland
George Meeker
as Richard Bolston
Russell Hicks
as Mr. Woodbury
Selmer Jackson
as The Warden
Rollo Lloyd
as Amos Sprague
Thomas E. Jackson
as Detective Lt. Strom
