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?

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.