A burglar that Mike once put in jail fears a third strike conviction if he reports that he witnessed a murder as he lay in wait to rob an office, and he goes to Mike for help in convincing the police that the wrong man has been arrested for the crime. The detective on the case has a long-standing grudge against Mike, so he does an end run around her by enlisting Marcellus's help. When they discover that the perp is an undercover cop, they are forced to devise a plan to trap him into confessing.

After Mike saves Leda Mills from three would-be rapists, she decides that the only way she can regain control of her life and prevent her attackers from hurting other women is to hunt them down and murder them; Marcellus helps a teenager being neglected and corrupted by his drug-addicted father; Mike is horrified when Leda phones him after the first murder to thank him for being her inspiration, and works with Marcellus to stop her killing spree, but it's Liz's insights into her behavior that give them the key to her capture.