While investigating the murder of a surfer, Lisbon reconnects with her former fiancé, whom she has not seen in over a decade. At the same time, Cho questions his decision to be in a relationship with Summer.
Jane jeopardises Lisbon's latest case when Red John returns to taunt him on the eighth anniversary of the murders of his wife and child.
The cast of a quirky cabaret comes under suspicion when a charred body is found on the doorstep.
Jane and the CBI try to determine who would have reason to kill a popular English teacher.