Michael O'Hara

When a man is found beaten to death, Mac and Stella encounter a gang called the Tanglewood Boys - young men who kill for sport and not business, and Danny and Aiden investigate a hit-and-run accident that leads them to an illegal massage parlour.

When the parking garage where his wife was killed is set for demolition, Monk intervenes, but finds himself investigating the disappearance of a city official who is key to preserving the site.