Based on a real-life case.

Preben Pramm has been dead for a week. He’s been stripped naked, bound, and subjected to horrific torture. The house has been turned upside down – a sign of frustrated perpetrators unable to find what they were looking for? Pramm has neither friends nor relatives, and hardly even talks to his neighbors. What was his secret? Why did Preben Pramm have to die?

“The case is known as one of the most brutal and bizarre in modern Norwegian criminal history. On my first day at the Larvik police, I was allowed past the police tape at the crime scene. It was a peculiar feeling, crossing that threshold and retracing the steps of an unknown killer. The experience of walking from room to room and seeing the merciless traces of a life and death struggle became the start of my authorship.”
– Jørn Lier Horst