-Ronnie McIntyre, a conman can't seem to leave the life behind even once he's in the witness protection program. Mary and the FBI bust him for running another money scam.
-In order to stay in WITSEC Ronnie offers to help the Marshals take down Julian Conrad, a top gun runner. Mary and Marshall go undercover to meet Conrad but when Conrad threatens Ronnie, the FBI break in and arrest him.
-Much to Mary's dismay, per his deal, Ronnie gets his pick of WITSEC locations anyway.
-Mary agrees to a date with her ex-husband, Mark who she was married to for five days when they were seventeen. They have a one night stand. When wants more than one night Mary breaks it off.
-Marshall and Abigail realize they are both commitmentaholics and decide to take things slow. Then they decide maybe they can move forward a bit faster and Marshal decides to use the gun box Abigail bought for him at her place.