A series of chilling, anonymous phone calls forces detectives Ben Cooper and Diane Fry to confront a predator who views murder as a meticulous art form. As the investigators scramble to decipher the caller's cryptic messages, they find themselves entangled in a psychological game where the boundaries between a harmless prank and a lethal reality blur. The narrative follows the duo as they navigate the disappearance of a woman from a parking garage while simultaneously attempting to solve the cold case of an unidentified body found in the woods. Their investigation is hampered by the killer's calculated manipulation, which leaves them with intimate knowledge of his twisted rituals but no concrete leads on his identity or his next target.

This work is characterized by the established conventions of the British police procedural, emphasizing the friction between its two lead investigators. The narrative relies on a slow-burn tension that prioritizes psychological depth over high-octane action sequences. Readers likely find the procedural details regarding the identification of the victim to be the most compelling aspect of the investigation. The book suggests a focus on the darker, more isolated corners of the English countryside, which serves to heighten the sense of vulnerability for the characters involved.