Reese becomes romantically involved with the newest Person of Interest: an attractive woman who isn't all that she seems.

The Machine identifies Darren, a teenager whose brother was just murdered, as the next POI. Meanwhile, Finch is growing concerned that the son of his former business partner is dangerously close to finding out about the Machine.

Reese goes undercover in an idyllic neighborhood when The Machine’s latest number sends him to the suburbs.

As Reese and Finch try to save a hotel maid's life, they encounter a litany of suspects; Detective Carter considers a significant offer from the FBI.

The machine gives Finch 38 numbers at once; information about Carter's past is revealed.

The secrets of Finch’s operation before he enlisted Reese are revealed, including shocking ties to present-day events.