A private investigator finds himself entangled in a lethal web of greed and deception when two cousins solicit his services to secure a dead relative's insurance payout. Slim Callaghan, a sharp-witted and cynical private investigator, navigates the treacherous social circles of the wealthy to uncover the truth behind a suspicious death. He faces opposition from cunning suspects and the inherent dangers of the criminal underworld. The narrative employs a fast-paced, hardboiled framework typical of mid-century detective fiction, utilizing a third-person perspective that keeps the reader close to Callaghan's investigative process.

Readers frequently highlight the snappy, rhythmic dialogue that defines Cheyney's writing style. Discussion often centers on the contrast between the protagonist's cynical exterior and his methodical approach to solving complex crimes. Critics note that the pacing remains brisk, prioritizing plot momentum over extensive character introspection. The book is often compared to the works of American hardboiled masters, though it retains a distinct British sensibility in its social commentary. Fans of the genre appreciate the intricate plotting that keeps the resolution obscured until the final chapters.