Government officials discover a horrible plot: the Chinese are tunneling their way to the United States.
Kerwin Mathews
Cmdr. Jonathan Shaw
Viviane Ventura
Tila Yung
Robert Ayres
Adm. Felix Hillebrand
Peter Arne
Arnold Kramer
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October 1, 1967
1h 31m
4.8
Montgomery Tully
Charles F. Vetter
22
Metro-Goldwyn-Mayer British Studios
GB
Reynolds-Vetters Productions Ltd.
N/A
Al Mulock
Sgt. Marvin Mulberry
Martin Benson
Gen. Chan Lu
Peter Elliott
Dr. Kengh Lee
Earl Cameron
Sgt. Seth Hawkins
John Brandon
Maj. Frank Cannon
Ed Bishop
Lt. Cmdr. Vance Cassidy (as Edward Bishop)
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