Intrigue aboard a nuclear sub with foreign agents infiltrating the crew to get their hands on a top secret device.
Lloyd Haynes | Lieutenant Dave Burston | |
Dewey Martin | Skip Langley | |
Leonard Nimoy | Commander Phil Kettenring | |
William Windom | Captain Frank Reardon | |
Keenan Wynn | Orville Kelly | |
Sam Elliott | Ensign William 'Bill' Sandover |
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