A routine hospital operation turns fatal for a prominent politician, plunging Chief Detective-Inspector Roderick Alleyn into a complex murder investigation. Alleyn must navigate a web of deceit and hidden motives within the hospital and among the victim's political circle. The suspects include a disgruntled surgeon, a nurse with a secret, the victim's wife, and a host of political rivals, each with a potential reason to want the Home Secretary dead. The narrative unfolds through Alleyn's keen observation and deduction as he works to uncover the truth behind the seemingly straightforward surgical mishap.

This classic crime novel by Ngaio Marsh is celebrated for its intricate plotting and well-drawn characters, typical of the Golden Age of Detective Fiction. Readers often praise Marsh's ability to create a compelling mystery within a confined setting, with Inspector Alleyn's sharp intellect guiding the investigation. The novel is noted for its exploration of professional rivalries and personal relationships that can lead to deadly consequences. The inclusion of political intrigue adds another layer to the suspense, making it a satisfying read for fans of traditional detective stories.