Season 3: Episode 43: A Spy in the House of Me

When Maya's first love, John Kenny, pops back into town she becomes as happy as she's ever been, as the two find their old spark back in full force. However, Jack is angry about the whole thing, as he still has not forgotten when he walked in on the two of them fooling around. Meanwhile, Finch uses a 'tough love' method to train a new intern, while Nina's television appearance is ruined when an old allergy acts up.