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Darren McGavin as Harry Forbes |
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Gary Collins as Steve Bancroft |
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Robert Vaughn as Gordon Cain |
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James Hampton as Lew Price |
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Philip Abbott as Frank Morrison |
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Joseph Campanella as Frank Lafferty |
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Pamela Bellwood as Sarah Michaels |
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Tom Hallick as Phil Cameron |
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Steven Keats as Paul Bannister |
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William Schallert as Professor Mills |
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Cliff Osmond as Sheriff Barlow |
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Andrew Bloch as Neal Kelso |
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Stuart Pankin as Sam Tate |
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Betty Ann Carr as Flo Mattson |
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H.M. Wynant as Flight Director |
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Bill Zuckert as Ace Landon |
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Michael Irving as MIB #1 |
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Bruce Katzman as MIB #2 |
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Eddie Carroll as MIB #3 |
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Jesse Bennett as MIB #4 |
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Robert Bristol as Helicopter Pilot |
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J.R. Clark as Judd Gates |
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Craig Clyde as Captain Wyatt |
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John William Galt as NASA Official |
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Anne Galvan as Technician |
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Ken Hepner as Pilot |
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Peter Liakakis as Barman |
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Debrah Macfarlane as Female Specimen |
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Chesley Noone as A.F. Captain |
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H.E.D. Redford as CAPCOM Officer |
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Max Robinson as Payload Officer |
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Ocie Robinson as A.F. Guard |
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Michael Ruud as George Turner |
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Scott Wilkinson as Flight Activity Officer |
| Writing | Ken Pettus | Screenplay |
| Directing | James L. Conway | Director |
| Production | Charles E. Sellier Jr. | Producer |
| Crew | Ken Horn | Makeup Effects |
| Editing | Michael Spence | Editor |
| Art | Randy Staheli | Set Decoration |
| Writing | Thomas C. Chapman | Story |
| Costume & Make-Up | Peter Tothpal | Hairstylist |
| Art | Chip Radaelli | Art Direction |
| Costume & Make-Up | Julie Staheli | Costume Design |
| Writing | James L. Conway | Story |
| Art | Paul Staheli | Production Design |
| Costume & Make-Up | Karoly Balazs | Makeup Artist |
| Production | Bill Cornford | Associate Producer |
| Sound | John Cacavas | Original Music Composer |
| Camera | Paul Hipp | Director of Photography |
| Production | Amy Schreiber | Casting |
| Directing | Jackie Saunders | Script Supervisor |
| Crew | Greg Brickman | Stunt Coordinator |
| Crew | Tom Lupo | Stunt Coordinator |
| Crew | Debbie Evans | Stunts |
| Crew | Tom Elliott | Stunts |
