After returning from Los Angeles, Rebecca marvels at how important a stranger can become. Jack meets Miguel, a store clerk who lends him a sports coat for meeting Rebecca's parents. Three new characters are introduced.
Deja pushes the boundaries of Randall and Beth's trust. Jack and Rebecca invite Randall's new teacher over for dinner.
Sherlock is reunited with M, a British criminal who appears to have followed him to New York. Meanwhile, Joan has reservations about leaving Sherlock and taking on a new client.
Atwater and Ruzek go undercover as inmates of a federal prison to solve the murder of a 10-year-old girl.
Dembe is concerned as Red tries to find out who turned him in. Liz hunts for a Blacklister who offers to erase debts - for a deceptively high price.
