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 |
| Camera | Peter Jessop | Director of Photography |
| Costume & Make-Up | Pearl Rashbass | Makeup Artist |
| Production | Robert Fennell | Production Manager |
| Writing | David McGillivray | Screenplay |
| Sound | Stanley Myers | Original Music Composer |
| Art | Chris Burke | Art Direction |
| Production | Pete Walker | Producer |
| Crew | Matt McCarthy | Post Production Supervisor |
| Camera | Colin Bucksey | Focus Puller |
| Directing | James Hamilton | Second Assistant Director |
| Sound | Ian Hills | Boom Operator |
| Directing | Brian Lawrence | First Assistant Director |
| Production | Leigh Taylor | Production Secretary |
| Sound | Tony Anscombe | Sound Mixer |
| Costume & Make-Up | George Partleton | Makeup Supervisor |
| Camera | John Metcalfe | Camera Operator |
| Sound | Chris Munro | Boom Operator |
| Camera | Peter Sinclair | Camera Operator |
| Sound | Peter O'Connor | Sound Recordist |
| Lighting | Ted Davis | Gaffer |
