Director: Adolfo J. Kolmerer
Cast: Luise Heyer, Sabin Tambrea, Friedrich Mücke, Rainer Bock, Andreas Döhler
The Calendar Killer is a 2025 German crime thriller directed by Adolfo J. Kolmerer, running 97 minutes. A tightly wound psychological suspense film, it places an ordinary woman at the center of an impossible ultimatum delivered by a methodical serial killer — and a stranger on the other end of a crisis phone line.
What is The Calendar Killer about?
Klara's evening takes a terrifying turn when a serial murderer who targets victims on specific calendar dates makes contact and presents her with a devastating choice: take her husband's life or forfeit her own before the night is over. As Klara navigates her dread, Jules begins his overnight shift at a safety helpline — a service designed to escort vulnerable women home by phone. Her call lands on his line, pulling him headlong into a situation far beyond anything his training prepared him for. Neither Klara nor Jules can be certain who to trust, and each minute that passes brings her deadline closer. The film unfolds in near-real time, ratcheting up pressure as two strangers — united only by a phone connection — try to find a way out of an engineered trap.
Cast & crew
Director Adolfo J. Kolmerer brings a lean European thriller sensibility to the material. Luise Heyer anchors the film as Klara, delivering a physically and emotionally demanding performance under near-continuous duress. Sabin Tambrea plays Jules, the helpline operator whose calm professionalism is tested to its limits. Supporting roles by Rainer Bock, Friedrich Mücke, and Dennenesch Zoudé add texture to the escalating situation.
Context & significance
German-language crime thrillers have carved a strong following among Persian-speaking diaspora audiences in recent years, partly through the global reach of German noir television and partly because the genre's emphasis on procedural tension and moral dilemma travels well across cultures. The Calendar Killer fits squarely in the tradition of compressed, high-stakes suspense — one night, one victim, one operator trying to hold everything together. For Iranian viewers abroad who enjoy tight genre cinema, the film is available on K-Time with a full Persian dub and Persian subtitles, meaning you can follow every moment of the story in your preferred language without friction.
Where & how to watch
The Calendar Killer is available now on K-Time with Persian dub and Persian subtitles. Watch on the web, your TV, or your phone — no VPN needed, no geo-blocking, and no extra download required. Start a subscription and cancel anytime.