Catherine Morland
Richard Conroy
Det. Lt. Jerry McMullen (as Larry Blake)
John Morland
The Stranger / Willis - the Caretaker
James O'Neil
Marian Gordon
Red Bailey
Dorothy - the Maid
Det. Sgt. Tom Carey
Patricia McMullen
Maureen McMullen
Chinese Waiter (uncredited)
Fire Warden at Car Wreck (uncredited)
X-Ray Technician (uncredited)
Mike (uncredited)
Mrs. O'Neill (uncredited)
Williams (uncredited)
Dr. Pearson (uncredited)
Det. Sgt. Gorman (uncredited)
Trooper at Roadblock (uncredited)
Radio Commentator (voice) (uncredited)
O'Neil's Secretary (uncredited)
Denny (uncredited)
Chris (uncredited)
Coroner's Deputy (uncredited)
Jerry McMullen Jr. (uncredited)
Joe - Railroad Worker (uncredited)
Charlie - Policeman (uncredited)