Sweden's prime minister Olof Palme was shot dead on a Stockholm street in 1986. The unsolved investigation of his death has been a disgrace for the Swedish police brigade for the last two decades, Something the chief of police, Lars Martin Johansson (Rolf Lassgård) is very frustrated over. He decides to re-investigate the murder case. Figuring that maybe the killer wasn't the deceased old degenerate Christer Pettersson but a trained killer within the police. (thetvdb.com)