A stripper at the club Studio Six is murdered. A political scandal takes off when the Minister of Commerce appears to have been at the club. He resigns - but only to hide an even bigger secret.

When the charred remains of woman are found, Säpo, the Swedish Security Services, suspect Gunvald Larsson of being mixed up in her murder. The dead woman was wanted internationally and a member of a group of militant eco-activists carrying out attacks around the world. Gunvald sets out on his own to find the woman's murderer, with Säpo on his heels. Martin Beck is ordered to arrest Gunvald and his loyalty to his colleague is now put to the test.

Helena lives with her husband and children but secretly has a lover. She has decided to end the relationship, but her last meeting with her lover comes to a devastating end.

Erica returns to her hometown for her parents funeral and her childhood friend murdered