Plot summary
Despite her protests, Mary is forced to team up with an unapologetic witness ( Maury Sterling ) to take down an even bigger criminal ( D.W. Moffett ). Meanwhile, Mary's ex-husband Mark ( Bryan Callen ) visits Albuquerque and she reluctantly agrees to have dinner with him, after which they have a one-night stand. Marshall decides to move in with Abigail (Rachel Boston) in order to increase their chances of having a good relationship.
Credits
Adapted from Wikipedia contributors, List of In Plain Sight episodes. HTML formatting and reference markers removed.