When a severed human foot washes up on shore, the squad is called in to identify the victim and track down the murderer as more body parts are found. After an unsuccessful job hunt, Angela finds she enjoys helping out Korsak at the Dirty Robber.

The squad works overtime hunting down a serial killer sniper. Maura befriends a witness to the crime, who happens to suffer from a mental condition that has him believing he is a wolf.