Lisbon goes undercover as a prison inmate in order to get a convict to turn on her boyfriend, who is the leader of a high-end car theft ring.

The team investigates a murder linked to a counterfeit diamond operation, but illness forces Jane to direct his colleagues from the office as he recuperates. Meanwhile, Abbott is concerned that transgressions in his past could harm his wife's chance to obtain a prestigious job in Washington, D.C..