Hugo is a brilliant turn-of-the-century scientist, loved and respected by his family and friends, admired by his colleagues. But he is a man quickly becoming obsessed with a curious and frightening question... what is the mysterious apparition found in the photographs of his dying subjects?
Unfortunately the movie The Asphyx is not yet available on HBO Max.
| Directing | Peter Newbrook | Director |
| Writing | Brian Comport | Screenplay |
| Directing | Roger Simons | Assistant Director |
| Directing | Phyllis Crocker | Continuity |
| Camera | Chris Holden | Camera Operator |
| Costume & Make-Up | Jimmy Evans | Makeup Artist |
| Costume & Make-Up | Stephanie Kaye | Hairstylist |
| Crew | Ted Samuels | Special Effects |
| Sound | Peter Bond | Sound Editor |
| Sound | John Cox | Sound Supervisor |
| Sound | Bob Jones | Sound Re-Recording Mixer |
| Sound | Bill McGuffie | Conductor |
| Writing | Christina Beers | Screenstory |
| Writing | Laurence Beers | Screenstory |
| Production | John Brittany | Producer |
| Production | Maxine Julius | Associate Producer |
| Sound | Bill McGuffie | Original Music Composer |
| Editing | Maxine Julius | Editor |
| Art | John Stoll | Production Design |
| Art | Arthur Taksen | Set Decoration |
| Costume & Make-Up | Evelyn Gibbs | Costume Design |
| Directing | Nigel Wooll | Second Assistant Director |
| Sound | Ken Ritchie | Sound Recordist |
| Production | Ted Sturgis | Production Manager |
| Camera | Freddie Young | Director of Photography |
