When Jules starts his shift on the escort phone, a telephone support line for women to get home safely, everything looks like a quiet Saturday evening. That is until he receives a call from a young mother named Klara, who claims that she will die that very night at the hands of a notorious female killer.
Unfortunately the movie The Calendar Killer is not yet available on HBO Max.
| Writing | Sebastian Fitzek | Book |
| Writing | Susanne Schneider | Screenplay |
| Directing | Adolfo J. Kolmerer | Director |
| Production | Regina Ziegler | Producer |
| Production | Barbara Thielen | Producer |
| Production | Susa Kusche | Producer |
| Camera | Christian Huck | Director of Photography |
| Art | Thomas Freudenthal | Production Design |
