Full Credits
26 members

Carol White
Cathy Palmer

Paul Burke
Jack Byrnes

Mala Powers
Meg Stone

Scott Hylands
Kenneth Daly

James B. Sikking
Joe Menchell

Walter Brooke
Jerry Wolfe

Mathilda Calnan
Ilsa (as Matilda Calnan)

Gene Lyons
Dr. Blanker

Dennis Patrick
Dr. Parkington
Barry Cahill
FBI Agent Crosley

Andrea King
Brenda Frazier (uncredited)

Edith Atwater
Hospital Desk Nurse (uncredited)

Ron Masak
Paul Fleming (uncredited)

Harry Holcombe
Inspector Dixon (uncredited)
Leon Alton
Man in Ticket Line (uncredited)

Rachel Ames
Dr. Parkington's Nurse (uncredited)

Al Checco
Hotel Clerk (uncredited)

John Dennis
Mechanic (uncredited)

Edward Faulkner
Cop at Dixon's Party (uncredited)

Peter Hobbs
Cathy's Doctor (uncredited)
Tony Regan
Detective (uncredited)

Mark Robson
(uncredited)

Jeffrey Sayre
Cop at Dixon's Party (uncredited)

Suzanne Somers
Woman on Sidewalk (uncredited)

Claude Stroud
Pet Owner (uncredited)
Mark Tapscott
Man on Cable Car (uncredited)
9 members
Mark Robson
Director
Larry Cohen
Story
Larry Cohen
Screenplay
Lorenzo Semple Jr.
Screenplay
Mark Robson
Producer
Ernest Laszlo
Director of Photography
John Williams
Original Music Composer
Joseph Dimmitt
Costumer
Dorothy Spencer
Editor