Lee Barrett
George Maharis
Dr. Gregor Hoffman
Richard Basehart
Guard Lt. Raskin
John Clarke
Guard Lt. Johnson
Hari Rhodes
Martin
Martin Blaine
Dr. Baxter
Henry Beckman
Fake SDI Agent
Harry Lauter
Dr. Yang
James Hong
Desk Guard Mason
Russ Bender
Dr. Ostrer (uncredited)
Harold Gould
Waitress
Lee Remick
Lead Agent "X-Ray", drives car
William Bryant
Ann Williams
Anne Francis
Second Agent "X-Ray", scratches hand
James Doohan
Helicopter Pilot Henchman
Michael Barrier
Detective Captain at Baseball Stadium
Tol Avery
Guard
John Hubbard
Gen. Williams
Dana Andrews
Dr. Leonard Michaelson
John Larkin
Eric Cavanaugh
Richard Bull
Henchman Donald
Frank Sutton
Henchman Veretti
Ed Asner
Tasserly
Simon Oakland
Agent Reagan
John Anderson
Original Music Composer
Jerry Goldsmith
Casting
Lynn Stalmaster
Screenplay
James Clavell
Novel
Alistair MacLean
Edward Anhalt
Director
John Sturges
Producer
Art Direction
Herman A. Blumenthal
Set Decoration
Charles Vassar
Editor
Ferris Webster
Director of Photography
Robert Surtees