Victor Maskell, a disgraced art historian and former Soviet spy, reflects on his life of duplicity and betrayal as his past finally catches up with him. As he navigates the twilight of his existence, Maskell attempts to reconcile his public persona as a pillar of the British establishment with his secret life as a mole for the KGB. The narrative unfolds through his introspective, first-person account, which serves as both a confession and a defense against the encroaching scrutiny of the authorities. He must confront the wreckage of his personal relationships and the ideological fervor that once justified his treasonous activities.

This novel is widely regarded as a sophisticated examination of the moral complexities inherent in the Cold War espionage era. Critics often highlight the precision of the prose and the depth of the protagonist's psychological portrait as defining features of the work. The narrative is frequently praised for its ability to transform a historical scandal into a meditation on the nature of loyalty and deception. Readers often note that the book demands close attention due to its layered structure and the unreliable nature of the narrator's perspective. The work remains a significant entry in the author's bibliography, noted for its stylistic rigor and thematic gravity.