Cho and Lisbon play an engaged couple to check out a stolen ring at a jewelry store. The store bought the gems from a Joseph Rosales at a gem show. When Cho heads out to the gem show, Abbott tells him to take Vega with him. She did something wrong but he thinks she's young and reformable.
Kirk Upton, one of the people working the gem show is murdered. Cho and Vega find he was working with another vendor, Walker Pond. The two of them manage to capture Pond who is on the run but he didn't kill Upton. Later, Cho invites Vega to accompany him to the firing range.
Agent Abbot's wife, Lena is offered the position of Under Secretary for the Dept. of Commerce but she must got through a confirmation hearing. Abbott realizes that his past on the Rio Bravo task force which took down a cartel may pose a problem for her. It is suggested that he and Lena pretend to be separated to give her a better chance of being confirmed.
With Patrick Jane sick, he has Lisbon go under cover as a psychic at the gem show to catch the killer. Bebe, the gem appraisers daughter was Kirk's partner in the theft. When Kirk felt guilty because two guards were killed and the FBI was closing in, he wanted to turn himself in. Bebe killed him to stop him.
Back in his airstream with Lisbon, Jane asks if she'd just like to leave and do something else. Does she really want to work for the FB forever? Lisbon says that's who she is. Jane says he's just thinking out loud.