Martin's daughter, Emma, takes up a night watch job to find out what happened to her parents almost thirty years ago. A meeting with Wörmer in his cell pulls the serial killer out of his coma and sets in motion a chain of fateful events.
Detective Mørck and team reopen a cold case on Bornholm Island involving a girl's death, a cult, and missing women. Mørck must solve the case and confront his past to move forward with his fiancée.