A private investigator returns to New York to uncover the truth behind a friend's apparent suicide, only to find himself entangled in a dangerous conspiracy involving stolen Nazi diamonds and a mysterious woman. Mike Hammer, a hardened private eye, is pulled back into the gritty streets of 1970s New York when he learns of his old friend's death, officially ruled a suicide. Driven by suspicion, Hammer begins his own investigation, which quickly leads him into a shadowy world of hidden fortunes and a desperate search for a beautiful woman connected to the deceased. He must navigate a treacherous landscape of deceit and violence, where the stakes are as high as the missing diamonds themselves, and the line between ally and enemy is perilously thin.

The novel plunges readers into a classic Mickey Spillane narrative, characterized by its gritty atmosphere and fast-paced plot. The premise sets up a compelling mystery that blends elements of crime noir with historical intrigue, promising a tense and action-filled experience. Spillane's work typically features a tough, no-nonsense protagonist navigating a world of danger and moral ambiguity, and this story appears to follow that established pattern. Readers familiar with Spillane's style can expect a straightforward, hardboiled detective story focused on uncovering secrets and confronting dangerous adversaries.