The Clocks by Agatha Christie

A blind woman discovers a dead body in her home surrounded by six clocks, none of which belong to her. Poirot, drawn into the case from a distance, must make sense of the staged crime scene and its connection to international espionage. Meanwhile, a young spy investigates nearby suspicious activities. As the two storylines intertwine, the truth about the murder—and the clocks—is gradually exposed. The novel blends traditional detective work with a spy-thriller twist.