A married man and his young mistress suffer sadistic torture when Tom, Dick and Harry invade their penthouse.
Unfortunately the movie The Penthouse is not yet available on HBO Max.
| Writing | Peter Collinson | Screenplay |
| Directing | Peter Collinson | Director |
| Production | Harry Fine | Producer |
| Sound | Johnny Hawksworth | Original Music Composer |
| Crew | Arthur Lavis | Cinematography |
| Editing | John Trumper | Editor |
| Art | Peter Mullins | Art Direction |
| Costume & Make-Up | George Partleton | Makeup Artist |
| Costume & Make-Up | Barbara Barnard | Hairstylist |
| Costume & Make-Up | Mary Gibson | Wardrobe Master |
| Sound | Stephen Dalby | Sound Supervisor |
| Sound | Laurie Clarkson | Sound Designer |
| Sound | Gerry Humphreys | Sound Re-Recording Mixer |
| Writing | Scott Forbes | Writer |
| Production | Michael Klinger | Executive Producer |
| Production | Guido Coen | Executive Producer |
