The Calendar Killer cast and character guide: Who plays whom in Prime Video's latest psychological thriller adaptation?

The Calendar Killer (Original title: Sebastian Fitzeks Der Heimweg) is the latest crime thriller to hit Amazon Prime Video. The German film, which came out on January 16, 2025, follows a complex tale of a woman who finds herself in a horrifying dilemma. Its official IMDb synopsis reads:

"Klara is going to die today unless she kills her husband instead. The Calendar Killer has given her that impossible choice. When Jules starts his night shift at a safety helpline for lonely women on their way home Klara's call reaches him."

Susanne Schneider has written the film's script based on Sebastian Fitzek's novel, Der Heimweg. Adolfo J. Kolmerer helms with this project. He has worked for his directorial contribution to shows like The Island, Oderbruch, and Unplugged. Besides, he has also worked on feature films like Abikalypse (2019) and Snowflake (2017).

Luise Heyer and Sabin Tambrea, star in the film's central roles. Heyer plays Klara, the woman at the center of a terrifying murder plot, whereas Tambrea plays Jules, the helpline operator who decides to help her find a way out of her misery. Friedrich Mücke, Rainer Bock, and Andreas Döhler also star in the film's prominent roles.

Let's dig into the details about the film's talented cast members and their characters.

The Calendar Killer: Full list of main cast and characters explored

The Calendar Killer brings together a talented cast for its psychological thriller premise. It features mainly German actors, who have had impressive careers before this project. Find out what they

1) Luis Heyer as Klara

The Calendar Killer presents Luis Heyer as Klara, a woman who receives a bizarre ultimatum from the titular character. The said killer expects her to kill her husband in order to save her life.

Heyer has worked on a variety of German productions. She is widely known for her performances in All About Me(2018), The Most Beautiful Couple (2018), Fado (2016), Jack (2014), and Ein Geschenk der Götter (2014). Besides, she also played a key supporting role in the Netflix series, Dark.

2) Sabin Tambrea as Jules

Sabin Tambrea, German actor and composer, plays Jules in The Calendar Killer. Jules is the helpline operator who tries to help Klara in her dreadful situation. He works as a volunteer for this service to help women traveling home late at night. During these times, he provides them with his company over the phone. He also offers aid in case of any emergency.

Tambrea has been working as an actor for over a decade. His most recognized projects have been Ludwig II (2012), In a Land That No Longer Exists (2022), The Glory of Life (2024), Narcissus and Goldmund (2020), and Berlin Station(2016).

3) Friedrich Mücke as Martin

The Calendar Killer shows Friedrich Mücke in the role of Klara's husband, Martin. She is forced to make a difficult decision to save either her or his life. Previously, Mücke has acted in films like Friendship! (2010), Weinberg (2015), Der Vierer (2024), Mahler on the Couch (2010), and Alles ist Liebe (2014).

4) Rainer Bock as HC

Rainer Bock in a previous role(Image via YouTube/@breakingbad)

Rainer Bock plays HC, a character crucial in shaping the fate of other characters. He is a veteran German actor, who has worked on acclaimed films like The White Ribbon (2009) and Barbara (2012), A Most Wanted Man (2014), and shows like AMC's Better Call Saul.