Michael Devine

A good Samaritan with a police record takes action against a terrorizing subway criminal, forcing the Reagans to weigh the rights and wrongs of vigilantism.

With Finch missing – kidnapped by his hacker nemesis, Root (guest star AMY ACKER) in last season's finale cliffhanger – Reese enlists Detectives Carter and Fusco to join the search for his friend on the second season premiere. But can they continue without him? Meanwhile, The Machine never sleeps and issues a new number to Reese. KEN LEUNG (Lost) guest stars as the latest Person of Interest.

Russo hits the road with Vice President Matthews; Francis and Stamper try to whip up support in Congress; Claire looks out for herself.

A young lawyer with a secret past is found dead; Price and Baxter debate the pros and cons of prison as a punishment versus alternative justice options.

When Jack attends a cocktail party, he falls for a Vermont congresswoman (Edie Falco); Liz suspects her Middle Eastern neighbor of being a terrorist.

Company policies lead to a shortage of critical supplies and an eventful trip to a prison convention. Piscatella starts a new anti-gang initiative.