Detective Huldar and child psychologist Freyja existed in a state of mutual detachment, their paths converging solely through the shadow of a young girl's trauma – a trauma born of witnessing her mother's death.

At the scene, the killer has left a slip of paper bearing a series of numbers. A cipher? A message? The investigation deepens as the same numbers begin to surface in unexpected places.

A fresh tragedy has unfolded: another victim discovered, brutally slain. In the wake of this horror, Huldar and Freyja forge unforeseen links, drawing them nearer not only to the truth of the crime but also to the individual most likely res…

The evidence strongly suggests a man in custody is responsible, yet Huldar remains unconvinced, pursuing the investigation with unwavering resolve. This renewed effort coincides with the unsettling disappearance of a young man, vanishing wi…