"People in an old, dark mansion are menaced by a maniac called "The Black Ace"."
Chester Morris
as Neil Broderick
Vivienne Osborne
as Martha Winters
Frank McHugh
as Clancy
Allen Jenkins
as Dugan
Henry Stephenson
as Thornton Drake
Grant Mitchell
as Austin Winters
Charles Middleton
as Jerry Simons
Virginia Howell
as Mrs. Quincy
Oscar Apfel
as Asa Marsden
Cornelius Keefe
as Henderson
Gus Robinson
as Pompey
Edward LeSaint
as Coroner
Ray Enright
Director
Ralph Spence
Screenplay
Joseph I. Schnitzer
Producer
Samuel Zierler
David Broekman
Original Music Composer
Charles Schoenbaum
Director of Photography
Rose Loewinger
Editor
Edward C. Jewell
Art Direction
Walter Plunkett
Costume Design
