Lucas Davenport -- intelligent, handsome, and blessed with a peculiar, but internally consistent, code of morality -- matches wits with a cold-blooded serial killer who has constructed an elaborate system of rules:
1. Never have a motive.
2. Never follow a discernible pattern.
3. Never carry a weapon after it has been used.
...and so on. Davenport understands rules; he designs games as a hobby, and finds the killer's self-imposed discipline familiar. In fact, the killer's rules hold the key to catching him.
This is the first of now twenty-two books in the Prey series. Sandford writes with wit and a gritty, police-procedural style. Banter feels genuine, and even Davenport -- who is a babe-magnet with a conscience -- is a realistically flawed hero. For a read-alike with a female hero, pair with Vanishing Act by Thomas Perry.