VIDEO: Sneak Peek - Tonight's Episode of CBS's PERSON OF INTEREST

On tonight's episode of the CBS drama series PERSON OF INTEREST titled 'Critical,' the Machine gives Finch and Reese the number of a brilliant surgeon, but they soon discover that a resourceful third party has raised the stakes for this POI, forcing them to turn to an unlikely source for help. The episode airs tonight, Thursday, Nov. 15 (9:01 – 10:01 PM, ET/PT) on the CBS Television Network. Get a first look below!