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About
Government officials discover a horrible plot: the Chinese are tunneling their way to the United States.
Theatrical
May 15, 1968
Director
Writer
Producers
Studio
Metro-Goldwyn-Mayer British Studios, Reynolds-Vetters Productions Ltd.
Cast
Full credits →K
Kerwin Mathews
Cmdr. Jonathan Shaw
V
Viviane Ventura
Tila Yung
R
Robert Ayres
Adm. Felix Hillebrand
P
Peter Arne
Arnold Kramer
A
Al Mulock
Sgt. Marvin Mulberry
M
Martin Benson
Gen. Chan Lu
P
Peter Elliott
Dr. Kengh Lee
E
Earl Cameron
Sgt. Seth Hawkins
J
John Brandon
Maj. Frank Cannon
E
Ed Bishop
Lt. Cmdr. Vance Cassidy (as Edward Bishop)
B
Bill Nagy
Col. Talbot Wilson
S
Sarah Brackett
Meg Webson
P
Paula Li Shiu
Dr. Arnn
D
David Spenser
Maj. Chai
M
Michael McStay
Bomb Train Commander
C
Carl Jaffe
Dr. Galissi
N
Norma West
Susan Kramer
L
Larry Cross
Broadcaster
B
Bessie Love
Matron
B
Bee Duffell
Matron's Friend
