FBI Agent Ben Reynolds has been pursuing a serial rapist who is terrorizing the Washington area. He reluctantly partners with The Lightman Group to track down information from a convicted criminal who the rapist seems to be copy-catting. Lightman infiltrates a prison to befriend Andrew Jenkins, a pathological liar who seems to stump even the mighty Lightman. The serial rapist may be Jenkins' protege.
As Torres and Loker search Jenkins' fan mail, Foster questions one of the rapist's recent victims. Foster is attacked by the rapist, which leads the team to discover the unlikely culprit.
Lightman asks for a permanent police presence in the firm, meaning Agent Reynolds might be working with The Lightman Group again.