A homicide detective goes undercover as a patient to investigate a psychotherapist he believes is linked to a strange double murder. As his therapy sessions continue the line between fantasy and reality begins to blur.
Unfortunately the movie The Ghoul is not yet available on HBO Max.
| Directing | Gareth Tunley | Director |
| Writing | Gareth Tunley | Writer |
| Production | Gareth Tunley | Producer |
| Production | Jack Healy Guttmann | Producer |
| Production | Dhiraj Mahey | Executive Producer |
| Production | Tom Meeten | Producer |
| Production | Ben Wheatley | Executive Producer |
| Sound | Waen Shepherd | Music |
| Camera | Benjamin Pritchard | Director of Photography |
| Art | Matthew Clark | Production Design |
| Camera | Nick Gillespie | Additional Photography |
| Sound | Freddie Halliwell | Boom Operator |
| Sound | Chris Whiteside | Sound Re-Recording Mixer |
| Costume & Make-Up | Hesther King | Costume Design |
| Directing | Adam Jenkins | First Assistant Director |
| Directing | Harriet Macdonald | First Assistant Director |
