When Jessica develops the same mental problems her late mother had, she becomes increasingly convinced that a supernatural entity is after her. Those around her are sure that it's merely psychotic delusions, but Jessica must solve the mystery in her bloodline before it's too late and the dark forces take over for good.
Unfortunately the movie Diabolisch is not yet available on HBO Max.
| Directing | Tristan van Doorn | Director |
| Writing | Tristan van Doorn | Writer |
| Production | Tristan van Doorn | Producer |
| Production | Jeroen van Eden | Producer |
| Sound | René Gijzemijter | Music |
| Editing | Jeroen van Eden | Editor |
