A gay police officer's double life is paid by Becks archenemy, Gavling. A man who runs Stockholm's underworld. In return have the homosexual police, been serving Gavling with secret information from the archive of the police authorities.

Peter Haber
as Martin Beck

Mikael Persbrandt
as Gunvald Larsson

Stina Rautelin
as Lena Klingström

Per Morberg
as Joakim Wersén

Ingvar Hirdwall
as Grannen

Rebecka Hemse
as Inger

Fredrik Ultvedt
as Jens Loftegård

Michael Nyqvist
as John Banck

Lasse Lindroth
as Peter

Peter Hüttner
as Oljelund