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Jackie Cooper as Kurt Anderson |
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Monte Markham as Eddie Reese / Col. Brice Randolph |
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Richard Anderson as Dr. Wylie |
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Robert Lansing as John Phillips |
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Susan Clark as Gail Randolph |
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John Lupton as Don Masters |
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Walter Brooke as Tom Everett |
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James B. Sikking as Astronaut Higgins |
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Paul Kent as Carl Samuels |
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Loretta Leversee as Toni Scott |
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Ray Dimas as Freddie |
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Patsy Garrett as Boy's Mother |
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Tom Hallick as Agent Wilson |
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John S. Ragin as Walters |
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Paul Micale as Beachgoer |
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Richard Stahl as Fred, Beachgoer's Friend |
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Bob Harks as Photographer (uncredited) |
| Writing | Robert Biheller | Teleplay |
| Writing | Charles Kuenstle | Teleplay |
| Writing | Charles Kuenstle | Story |
| Directing | Robert Michael Lewis | Director |
| Writing | Robert Biheller | Story |
| Writing | Gerald Di Pego | Teleplay |
| Directing | Robert Saunders | Assistant Director |
| Art | George C. Webb | Art Direction |
| Editing | Les Green | Editor |
| Crew | Bob Harks | Stand In |
| Editing | John Kaufman | Editor |
| Crew | Alric Edens | Cinematography |
| Sound | Gil Mellé | Original Music Composer |
| Production | Harve Bennett | Producer |
