When a convicted murderer escapes prison and a new killing occurs, Inspector Trave must navigate a web of deception to uncover the truth behind a seemingly open-and-shut case. After David Swain breaks out of prison, he becomes the prime suspect in the murder of his ex-girlfriend, Katya Osman, at her uncle's estate. Inspector Trave, who originally secured Swain's conviction, leads the pursuit but soon encounters evidence that contradicts the official narrative. As Trave digs deeper, he finds himself pitted against powerful figures with personal vendettas, forcing him to jeopardize his career and safety to expose the real culprit. The narrative follows a traditional investigative structure, focusing on the procedural challenges of a detective operating under immense institutional and personal pressure.

This work is characterized by its adherence to the conventions of the British police procedural, emphasizing the methodical nature of criminal investigation. The narrative structure suggests a focus on the moral dilemmas faced by a detective who begins to doubt the integrity of his own past successes. Readers likely find the tension derived from the protagonist's isolation within his own department as he pursues a truth that powerful interests wish to keep buried. The setting of Blackwater Hall serves as a classic backdrop for a mystery that prioritizes logical deduction over explosive action sequences.