Produced, Written and Directed by Mike Hodges
Based on Novel by Michael Crichton
Cinematography by Richard H. Kline
Film Editing by Robert L. Wolfe
Non-Original Music by Johann Sebastian Bach
Casting by Nessa Hyams
Art Direction by Fred Harpman
Set Decoration by Marvin March
Costume Design by Donald Brooks, Nino Novarese
Makeup : Leo Lotito Jr., Fred Williams
Cast
George Segal (Harry Benson)
Joan Hackett (Dr. Janet Ross)
Richard A. Dysart (Dr. John Ellis)
Donald Moffat (Dr. Arthur McPherson)
Michael C. Gwynne (Dr. Robert Morris)
William Hansen (Dr. Ezra Manon)
Jill Clayburgh (Angela Black)
Norman Burton (Det. Capt. Anders)
James Sikking (Ralph Friedman)
Matt Clark (Gerhard)
Jim Antonio (Richards)
Gene Borkan (Benson's Guard)
Burke Byrnes (Benson's Guard)
Jordan Rhodes (Questioner No. 1)
Dee Carroll (Night Nurse)
Jason Wingreen (Instructor)
Steve Kanaly (Edmonds)
Al Checco (Farley)
Fred Sadoff (Police Doctor)
Jack Colvin (Detective)
Ian Wolfe (Priest)
Lee de Broux (Reporter)
Robert Ito (Anesthetist)
Victor Argo (Orderly)
Michael Santiago (Cop)