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Ed Bishop as Commandant Tom Decker |
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Helen Downing as Cassandra Jackson |
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John Gabriel as Bertrand Le Maitre |
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James Copeland as Oliver MacDonald |
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Robert Lee as A.G. Tiosawa |
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Vernon Dobtcheff as N.G. Waldron |
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Barry Warren as Ensign Warner-Carr |
| Directing | James Cellan Jones | Director |
| Writing | Clifford D. Simak | Original Story |
| Writing | Robert Muller | Adaptation |
| Production | Alan Bromly | Producer |
| Art | Tony Abbott | Production Design |
| Writing | Robert Muller | Writer |
| Sound | Norman Kay | Theme Song Performance |
