When Norman Graysmith is invited into the home of an aspiring serial killer, Aidan Mendle, he believes he has the subject for the documentary that will make his career.
Unfortunately the movie When the Screaming Starts is not yet available on HBO Max.
| Directing | Conor Boru | Director |
| Writing | Conor Boru | Screenplay |
| Writing | Ed Hartland | Screenplay |
| Directing | Toby Kearton | First Assistant Director |
| Sound | Michael Palmer | Original Music Composer |
| Costume & Make-Up | Sophie Leatherby | Makeup Designer |
| Editing | Alan Rae | Editor |
| Production | Conor Boru | Producer |
| Production | Jourdan Prince | Associate Producer |
| Production | Dom Lenoir | Producer |
| Production | Ed Hartland | Producer |
| Production | Kavé Niku | Executive Producer |
| Production | Lucinda Rhodes Thakrar | Co-Producer |
| Production | Octavia Gilmore | Executive Producer |
| Production | Jared Rogers | Producer |
| Camera | Adrian Musto | Director of Photography |
| Production | Yasen Atour | Executive Producer |
| Costume & Make-Up | Sophie Leatherby | Hair Designer |
