Also known as 'The Confessional', another of Pete Walkers's critiques of institutional hypocrisy, in which a troubled young girl goes to confession at the local church. Unfortunately, the sexually frustrated priest she confesses to becomes obsessed with her. At first, the priest stalks the girl, but later it is revealed that he will stop at nothing, including blackmail and murder, just to get close to her.
Unfortunately the movie House of Mortal Sin is not yet available on HBO Max.
| Directing | Pete Walker | Director |
| Editing | John Black | Editor |
| Writing | Pete Walker | Original Story |
| Costume & Make-Up | Pearl Rashbass | Makeup Artist |
| Production | Pete Walker | Producer |
| Production | Robert Fennell | Production Manager |
| Sound | Stanley Myers | Original Music Composer |
| Art | Chris Burke | Art Direction |
| Writing | David McGillivray | Screenplay |
| Camera | Peter Jessop | Director of Photography |
| Sound | Peter O'Connor | Sound Recordist |
| Lighting | Ted Davis | Gaffer |
| Directing | James Hamilton | Second Assistant Director |
| Sound | Ian Hills | Boom Operator |
| Crew | Matt McCarthy | Post Production Supervisor |
| Camera | Peter Sinclair | Camera Operator |
| Directing | Brian Lawrence | First Assistant Director |
| Sound | Chris Munro | Boom Operator |
| Sound | Tony Anscombe | Sound Mixer |
| Production | Leigh Taylor | Production Secretary |
| Camera | John Metcalfe | Camera Operator |
| Camera | Colin Bucksey | Focus Puller |
| Costume & Make-Up | George Partleton | Makeup Supervisor |
