"Rules of Prey" is a crime thriller novel written by John Sandford. It is the first book in the Prey series, featuring the character Lucas Davenport, a detective in the Minnesota Bureau of Criminal Apprehension. The story follows Davenport as he investigates a series of brutal murders committed by a cunning and elusive killer. As the investigation unfolds, Davenport must navigate the complexities of the case while dealing with the psychological challenges posed by the killer. The novel combines elements of suspense and police procedural, showcasing Davenport's skills and determination to bring the murderer to justice.