A coroner finds a capsule in the head of a heavily mutilated corpse, containing a phone number and single word: the name of his daughter.
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 telephone safety helpline for lonely women on their way home, Klara's call reaches him. He soon becomes her last hope for survival and races against time to save her.
With no witnesses, no traces, and no corpse, Josy, the 13-year-old daughter of well-known psychiatrist Viktor Larenz, has disappeared in unexplained circumstances. Two years later, a mysterious woman appears. She forces Viktor to face up to his daughter's disappearance and pushes him to his psychological limits.
