The inhabitants of Ganymede need to find mates from another world or they will become extinct. They soon discover a suitable breeding stock amongst the females of planet Earth.
Unfortunately the movie The Night Caller is not yet available on HBO Max.
| Writing | Frank Crisp | Novel |
| Directing | John Gilling | Director |
| Writing | Jim O'Connolly | Screenplay |
| Editing | Philip Barnikel | Editor |
| Camera | Stephen Dade | Director of Photography |
| Costume & Make-Up | Joyce James | Hairstylist |
| Sound | Johnny Gregory | Original Music Composer |
| Production | John I. Phillips | Executive Producer |
| Costume & Make-Up | Bunty Phillips | Makeup Artist |
| Production | Ronald Liles | Producer |
| Art | Harry White | Art Direction |
| Sound | Barbara Hopkins | Sound |
