Maurice Geraghty (Screenplay) · Bernard Carr (Director) · Dorothy Davenport (Screenplay)
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
Rene Beard
Dis
Donald King
Dat
Grant Mitchell
Judge
Steve Carruthers
Reporter (uncredited)
James Conaty
Bailiff (uncredited)
William Forrest
Reporter (uncredited)
Charles Gemora
Gorilla (uncredited)
Allen Mathews
Motorcycle Cop (uncredited)
Frank O'Connor
Squad Car Cop (uncredited)
William Ruhl
Homicide Squad Inspector (uncredited)
Marshall Ruth
Police Sergeant (uncredited)
Brick Sullivan
Officer Calladay (uncredited)
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A group of people find themselves trapped in a creepy mansion, complete with secret passageways, a mad doctor and a murderous gorilla.
