Steven Graves
Ben Gazzara
James Wright
E.G. Marshall
Gleason
Robert Cleaves
First Officer
Walt Davis
Salesman
Dan Ferrone
Stack
Sid Grossfeld
Nerve Gas Victim
Diki Lerner
Karley
Len Wayland
Cop
Joe Brooks
Eddie Garrett
Bob Harks
Timothy Drew
Martin Sheen
Robert Phillips
William Windom
Dr. Nordman
Joseph Wiseman
Lewis
Jim McMullan
Dr. Wolff
Will Kuluva
Agent
Hank Brandt
Captain Morrison
Quinn K. Redeker
Second Officer
Conrad Bachmann
Original Music Composer
Jerry Goldsmith
Director
Michael Crichton
Novel
Stunt Coordinator
Dick Ziker
Casting
Hoyt Bowers
Editor
Gene Fowler Jr.
Producer
Lee Rich
Production Design
Robert Emmet Smith
Robert L. Jacks
Set Decoration
James Cane
Screenplay
Robert Dozier
Special Effects
Logan Frazee
Makeup Artist
Jerry Cash
Director of Photography
Robert L. Morrison
Property Master
Robert M. Anderson