While Lisbon and her team investigate the murder of a young waitress in the Napa Valley, Jane goes behind Lisbon's back to orchestrate his own undercover operation using Van Pelt as bait.

Jane discovers an important clue to Red John's methods as the team encounters four of the suspects, and the CBI investigates the case of a software engineer killed by a drone strike.

Jane gets the CBI involved in a case in Napa in order to focus on Sheriff McAllister, while Van Pelt and Rigsby take a trip down the aisle.

With the final clue in hand, Jane attempts to gather the remaining Red John suspects in one place in hopes of finally revealing his identity.

Patrick Jane finally comes face-to-face with Red John, the serial killer he’s tracked since the madman murdered his wife and daughter. For 10 years, Jane has doggedly hunted his nemesis in his search for justice.