 | Anthony Geary als Dr. Jim Cole |
 | Marc Singer als Brad Mueller |
 | Micah Grant als Ray Bettencamp |
 | Chuck Connors als Stan Brown |
 | Vaughn Armstrong als Paul Bettencamp / Alien |
 | Deborah Anne Mansy als Kathleen |
| Lori Birdsong als Terri Scarborough |
| Harry Falk | Director |
| T.S. Cook | Teleplay |
| T.S. Cook | Co-Executive Producer |
| Jon Epstein | Executive Producer |
| Barry Greenfield | Supervising Producer |
| G. Warren Smith | Line Producer |
| Dana Kaproff | Original Music Composer |
| Michel Hugo | Director of Photography |
| David Byron Lloyd | Editor |
| Milt Hamerman | Casting |
| Roger Holzberg | Production Design |
| Melanie Hughes | Makeup Artist |
| Mary Hedges Lampert | Hairstylist |
| G. Warren Smith | Unit Production Manager |
| Phil Cook | First Assistant Director |
| Jamie Archer | Construction Coordinator |
| Stacy Hagen | Set Dresser |
| John A. Keim | Property Master |
| Joanie Montoya | Set Dresser |
| Ed Vega | Scenic Artist |
| Michael Becker | Boom Operator |
| Bayard Carey | Sound Mixer |
| John Stacy | Supervising Sound Editor |
| Jack Faggard | Special Effects |
| Steve Faggard | Special Effects Assistant |
| Arlen Johnson | Special Effects Assistant |
| Paul Cuffee | Electrician |
| Harland Espeset | Grip |
| Ken Johnston | Key Grip |
| John Koester | Camera Operator |
| Ralph McCarthy | Gaffer |
| Sally Jackson | Casting |
| Lynette Bernay | Wardrobe Supervisor |
| Jim Rosenthal | Assistant Editor |
| Donald Woods | Supervising Music Editor |
| Laura Hoffman | Production Coordinator |
| Darnell Fry | Story |
| Mike Marvin | Story |
