Ingrid Bergman
Dr. Constance Petersen
Gregory Peck
John Ballantine
Leo G. Carroll
Dr. Murchison
Michael Chekhov
Dr. Alexander Brulov
Erskine Sanford
Dr. Galt (uncredited)
Rhonda Fleming
Mary Carmichael
Bill Goodwin
House detective
Regis Toomey
Det. Sgt. Gillespie
Jean Acker
Matron (uncredited)
Irving Bacon
Railway Gateman (uncredited)
Richard Bartell
Ticket Taker (uncredited)
Harry Brown
Gateman (uncredited)
Joel Davis
John Ballantine as a Boy (uncredited)
Jacqueline deWit
Nurse (uncredited)
Edward Fielding
Dr. Anthony Edwardes (uncredited)
Alfred Hitchcock
Man Leaving Elevator (uncredited)
Teddy Infuhr
John Ballantine's Brother (uncredited)
Victor Kilian
Sheriff (uncredited)
George Meader
Hallett - Railroad Clerk (uncredited)
Matt Moore
Policeman at Train Station (uncredited)
Constance Purdy
Dr. Brulov's Housekeeper (uncredited)
Addison Richards
Police Captain (uncredited)
Janet Scott
Norma Cramer (uncredited)
Clarence Straight
Secretary at Police Station (uncredited)
Dave Willock
Bellboy (uncredited)
