Danielle Breton / Dominique Blanchion
Margot Kidder
Grace Collier
Jennifer Salt
Bobby Collins
Lobster child (uncredited)
Cathy Berry
African Room Waiter (uncredited)
Art Evans
Elaine D'Anna (uncredited)
Justine Johnston
Guard (uncredited)
James Mapes
Druggist (uncredited)
Laun Maurer
Extra (uncredited)
Bob Melvin
Hospital Attendant (uncredited)
Burt Richards
Joseph Larch
Charles Durning
Emil Breton
William Finley
Phillip Woode
Lisle Wilson
Arthur McLennen
Barnard Hughes
Mrs. Collier
Mary Davenport
Detective Kelly
Dolph Sweet
Louise Wilanski
Olympia Dukakis
Arlene
Catherine Gaffigan
Original Music Composer
Bernard Herrmann
Producer
Edward R. Pressman
Editor
Paul Hirsch
Director
Brian De Palma
Screenplay
Original Story
Louisa Rose
Director of Photography
Gregory Sandor
Associate Producer
Lynn Pressman-Raymond
Robert Rohdie
Casting
Sylvia Fay
Assistant Director
Alan Hopkins
Sound Recordist
Russell Arthur
Sound Editor
John Fox
Sound Mixer
Dick Vorisek
Assistant Editor
Susan Braddon
Production Design
Gary Weist
Key Makeup Artist
Jeanne Richmond