In this Cold War thriller, atomic scientist Dr. Frank Addison (Gene Barry) learns that his son, Tommy (Lee Aaker), has been kidnapped by communists while on a field trip to Santa Fe and will meet with a chilling end unless his father turns over top-secret information on the H-bomb. FBI inspector Harold Mann (Milburn Stone) is on the case, but it's clear that Tommy's safe return isn't his top priority.

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