The series follows the events during the fall and winter of 1991–92, when John Ausonius shot a total of eleven people with an immigrant background. The series partly follows Ausonius during the execution of the crime, and partly the police's detective work. The series also provides an insight into Ausonius' earlier life, from high school age onwards.

A drama-comedy about Max, a successful New York-based commercial cinematographer, who is disillusioned and alone. He has a very low opinion of love, romance and emotions. One day Max is contacted by his old childhood friend Peter, who invites him to come to a small Swedish city Hudiksvall and help him make a film about his daughter's friends.

A bomb threat is called in to a police station in Stockholm. The police bomb squad blows the briefcase to pieces and it looks like false alarm, until a baby is found inside. Soon, e-mails are sent out to every newspaper about the nasty situation that the police had tried to keep secret. Will the police ever overcome the "Monster"?

This is the incredible story behind Sweden's most notorious gangster, Clark Olofsson, whose infamous crimes gave rise to the term "Stockholm Syndrome".