Martin Jonsson beat Lotta Rudholm to death in the summer of 2016. Twelve years earlier, he unprovokedly beat 30-year-old Niklas Westman to death. But how did Martin become a killer with an uncontrolled rage?

On September 20, 2014, Albin Aspgren steps into the police station and admits that he murdered and dismembered his female friend. The murder is completely inexplicable to those around them.

Blacksmith Mikael Kittilä lives a double life. Outwardly, he meets women and works as a construction worker. He secretly dates gay men whom he ties up and tortures.