An American senator is visiting Stockholm and Martin Beck must lead a team to protect him from an international gang of terrorists.
In the midst of the fervour created by the diplomatic visit, a young, peace-loving woman is accused of robbing a bank. Beck is determined to prove her innocence, but gets trapped in the maze of police bureaucracy. To complicate matters a millionaire pornographer has been bludgeoned to death in his own bathtub.
Will Beck be able to manage each unravelling case and prevent further atrocities, even when his own life is put on the line?