Cmdr. Jonathan Shaw
Kerwin Mathews
Tila Yung
Viviane Ventura
Col. Talbot Wilson
Bill Nagy
Meg Webson
Sarah Brackett
Dr. Arnn
Paula Li Shiu
Maj. Chai
David Spenser
Bomb Train Commander
Michael McStay
Dr. Galissi
Carl Jaffe
Susan Kramer
Norma West
Broadcaster
Larry Cross
Matron
Bessie Love
Matron's Friend
Bee Duffell
Adm. Felix Hillebrand
Robert Ayres
Lanchek
Bill Hutchinson
Mine Foreman
Martin Terry
Police
Frank Lieberman
Roy Pattison
Nurse
Chela Matthison
Arnold Kramer
Peter Arne
Sgt. Marvin Mulberry
Al Mulock
Gen. Chan Lu
Martin Benson
Dr. Kengh Lee
Peter Elliott
Sgt. Seth Hawkins
Earl Cameron
Maj. Frank Cannon
John Brandon
Lt. Cmdr. Vance Cassidy (as Edward Bishop)
Ed Bishop
Director
Montgomery Tully
Story
Charles F. Vetter
Screenplay
Producer
Charles Reynolds
Executive Producer
Music
Ken Jones
Director of Photography
Kenneth Talbot
Art Direction
Jim Morahan
Production Manager
Ronnie Bear
Assistant Director
Pat Kelly
Sound Recordist
J.B. Smith
Gerry Turner
Recording Supervision
A.W. Watkins
Special Effects
Tom Howard
Camera Operator
Alan McCabe
Supervising Editor
Sidney Stone