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 |
| Production | Harold Richmond | Producer |
| Sound | Gilbert Vinter | Original Music Composer |
| Camera | Hone Glendinning | Director of Photography |
| Editing | Anne Barker | Editor |
| Art | Bernard Robinson | Art Direction |
| Costume & Make-Up | Ann Fordyce | Hairstylist |
| Costume & Make-Up | John Wilcox | Makeup Artist |
| Directing | Bert Dorsett | Assistant Director |
| Sound | Eric Humphriss | Sound Supervisor |
| Sound | Malcolm Stewart | Sound |
| Camera | Noel Rowland | Camera Operator |
| Directing | Kathleen Sinnott | Continuity |
