A famous industrialist is murdered at a restaurant in Malmoe. Police inspector Martin Beck in Stockholm gets the case. The suspects lead to people involved in illegal arms deals. But who was the biggest criminal, the murderer or the industrialist?

Gösta Ekman
as Martin Beck

Kjell Bergqvist
as Lennart Kollberg

Rolf Lassgård
as Gunvald Larsson

Niklas Hjulström
as Benny Skacke

Ingvar Andersson
as Per Månsson

Arthur Brauss
as Jürgen Hoffman

Andrea Heuer
as Hanna Mohr

Lena Nilsson
as Åsa Thorell

Tommy Johnson
as Bertil Svensson

Bernt Ström
as Einar Rönn