A group of people find themselves trapped in a creepy mansion, complete with secret passageways, a mad doctor and a murderous gorilla.
Larry Olsen
William 'Curley' Benson
Eilene Janssen
Betty
Peter Miles
Dudley
Ardda Lynwood
Ardda
Dale Belding
Speck Jones
Virginia Grey
Ann Loring
Don Castle
George
George Zucco
Doc Robbin
Paul Hurst
Jailer
Whitford Kane
'Fix-it' Dan Cameron
Wilton Graff
Prosecutor
Claire Du Brey
Housekeeper
James Lane
Assistant Director
Jack Temple
Bernard Carr
Director
Dorothy Davenport
Screenplay
Maurice Geraghty
Menifee Johnstone
Casting Director
Hal Roach, Jr.
Executive Producer
Robert F. McGowan
Producer
Sidney S. Van Keuren
Production Manager
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