A mysterious figure known as the Withered Man emerges to terrorize the city, forcing a desperate investigation into his true identity. The protagonist must navigate a web of deception and hidden motives to unmask the antagonist before further harm occurs. Operating within the conventions of mid-century British crime fiction, the narrative follows a linear progression as the investigator confronts both physical threats and logical puzzles. The story utilizes a third-person perspective to track the movements of both the law enforcement officials and the elusive criminal mastermind. The world is defined by the atmospheric tension of urban environments and the rigid social structures of the era.

Readers often note the brisk pacing characteristic of John Creasey’s prolific output under his various pseudonyms. Discussion frequently centers on the effectiveness of the central mystery and the author's ability to maintain tension throughout the investigation. Critics highlight the functional prose style that prioritizes plot progression over elaborate character studies. The work is recognized as a representative example of the mid-twentieth-century detective genre that focuses on the mechanics of crime solving.