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
