CBS "Person of Interest" Man goes vigilante after wife's murder 8 years before

(Harold Finch back in 2010)

CBS "Person of Interest" The episode is called "Karma." John, Harold & Fusco follow a therapist who is still grieving over his dead wife from 8 years before. They find out that he turned vigilante by framing 7 supposed criminals & sending them to prison. Who will be his next victim in that name of his dead wife? 

KARMA: Click on this hot link for Roscoe's Recap.