Tony's father Sam, abducted by aliens three years earlier, returns to earth and seeks out his wife and son, but Rachel has since been living with Joe and the reunion is awkward. Joe doesn't trust Sam, and Rachel can't quite decide what her feelings are for her two men. Sam is not the same as when he left, and he begins affecting Tony in frightening ways.
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| Directing | Harry Bromley Davenport | Director |
| Writing | Michel Parry | Story |
| Writing | Harry Bromley Davenport | Story |
| Writing | Iain Cassie | Writer |
| Writing | Robert Smith | Writer |
| Production | Joyce Gallie | Casting |
| Production | Mark Forstater | Producer |
| Art | Andrew Mollo | Art Direction |
| Editing | Nicolas Gaster | Editor |
| Camera | John Metcalfe | Director of Photography |
| Production | Robert Shaye | Executive Producer |
| Sound | Harry Bromley Davenport | Original Music Composer |
| Production | James Crawford | Associate Producer |
| Crew | Jo Ann Kaplan | Additional Dialogue |
| Visual Effects | Tom Harris | Special Effects Supervisor |
| Costume & Make-Up | John Webber | Special Effects Makeup Artist |
| Sound | Charles Ware | Sound Editor |
| Camera | Ed Buziak | Still Photographer |
| Directing | Maggie Jones | Continuity |
| Lighting | Michael Woollard | Gaffer |
| Sound | David Sutton | Boom Operator |
| Production | Terry Connors | Production Accountant |
| Art | Bill Perren | Painter |
| Art | Peter Body | Assistant Art Director |
| Camera | Jo Hidderley | Clapper Loader |
| Directing | Jake Wright | First Assistant Director |
| Camera | Mike Metcalfe | Focus Puller |
| Sound | Ken Scrivener | Sound Mixer |
| Directing | Michael Zimbrich | Second Assistant Director |
| Production | Hugh O'Donnell | Location Manager |
| Directing | Marjorie Lavelly | Continuity |
| Production | Vivien Pottersman | Production Manager |
| Camera | John Simmons | Camera Operator |
| Costume & Make-Up | Robin Grantham | Makeup Supervisor |
| Art | Dave Newton | Property Master |
| Lighting | Jim Beeby | Electrician |
| Production | Antonella Mancini | Production Secretary |
| Costume & Make-Up | Philippe Pickford | Wardrobe Supervisor |
| Production | Joyce Gallie | Casting Director |
| Directing | Andrew Warren | Second Assistant Director |
| Sound | John Midgley | Sound Mixer |
| Costume & Make-Up | Barry Richardson | Hairdresser |
| Editing | Jo Ann Kaplan | Assistant Editor |
| Production | Wendy Tayler | Publicist |
| Art | Reg Wheeler | Props |
| Lighting | Robert Bonecci | Electrician |
