A police investigation into a murder unearths deep-seated corruption within the force, pushing Detective Martin Beck to extreme measures. The death of a police captain reveals a history of brutality and corruption, igniting Martin Beck's outrage. He is compelled to take drastic actions, navigating a system rife with internal conflict and moral compromise, which ultimately leads to a catastrophic conclusion.

The Martin Beck series is known for its realistic portrayal of police work and its critical examination of societal issues. This installment, 'The Abominable Man,' is noted for its intense focus on internal police corruption and the psychological strain it places on its protagonist, Martin Beck. The narrative builds towards a shocking and tragic climax, reflecting the series' commitment to gritty realism and complex moral dilemmas. Readers often praise the series for its intelligent plotting and its unflinching look at the darker aspects of law enforcement.