Cast e produzione
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Donald SutherlandFrank Lansing - Vanessa RedgraveHeddi Lindquist
- Richard WidmarkOtto Gerran
- Christopher LeeLechinski
- Barbara ParkinsJudith Rubin
- Lloyd BridgesSmithy
- Lawrence DanePaul Hartman
- Bruce GreenwoodTechnician (Tommy)
- Michael J. ReynoldsHeyter
- Don SharpRegista
- David ButlerSceneggiatura
- Don SharpSceneggiatura