The team investigate the death of a software engineer who was the victim of a drone strike. Meanwhile, Jane comes into contact with four Red John suspects and stumbles upon a clue regarding the serial killer's methods.
Jane becomes part of a separatist commune in order to investigate the death of a U.S. attorney whose body turned up in Mexico, despite there being no evidence she crossed the border. Elsewhere, Van Pelt and Rigsby try to track down a stalker.
A grand jury is convened to review Red John's murder and determine if Jane should be tried. Meanwhile, Lisbon wonders what Jane's reaction would be if she relocated with Agent Pike; and Cho and Abbot track some new leads in the human-smuggling ring.