Plot summary
Reese must protect the sister of a soldier who died in Afghanistan and her boyfriend, an ex-Marine who lost his right arm. The two are trying to expose an executive stealing from a charity for wounded veterans. Carter is offered a temporary assignment to the FBI when Special Agent Donnelly returns with new clues he believes will lead to Reese. The situation gets complicated when Reese, for whom the wounded veterans charity case has become personal, puts himself at risk as the FBI closes in on him while Finch is unable to stop him.
The FBI ultimately arrests Reese and three mercenaries under suspicion of being "the Man in the Suit," but the financial information recovered from a safe deposit box will allow Finch to redistribute the stolen money to reputable military charities; Finch promises to help the couple to escape to safety. Fusco, meanwhile, grows increasingly suspicious of Carter's boyfriend Cal Beecher, who is revealed to be the godson of HR leader Alonzo Quinn.
Credits
Adapted from Wikipedia contributors, Person of Interest season 2. HTML formatting and reference markers removed.