A rich but disliked elderly man invites his relatives to a family reunion at his home. Once the gathering is complete, he announces enigmatically that he intends to change his will before he dies. Before he can do this, he is murdered. His niece (Gynt), a detective story writer, has to put her theories into practice by solving a real-life murder mystery.
Unfortunately the movie Three Steps In The Dark is not yet available on HBO Max.
| Directing | Daniel Birt | Director |
| Writing | Brock Williams | Screenplay |
| Writing | Roger East | Story |
| Sound | Monica Ross | Sound Mixer |
| Camera | Noel Rowland | Camera Operator |
| Art | Bernard Robinson | Art Direction |
| Camera | Hone Glendinning | Director of Photography |
| Sound | Eric Humphriss | Sound Supervisor |
| Editing | Anne Barker | Editor |
| Costume & Make-Up | Ann Fordyce | Hairstylist |
| Production | Harold Richmond | Producer |
| Sound | Gilbert Vinter | Original Music Composer |
| Directing | Kathleen Sinnott | Continuity |
| Costume & Make-Up | John Wilcox | Makeup Artist |
| Sound | Malcolm Stewart | Sound |
| Directing | Bert Dorsett | Assistant Director |
