Season 3: Episode 16 - Red Queen

Red Queen: When the CBI investigates the murder of an antiques dealer found dead in a museum, all the evidence seems to point to an unlikely suspect: Agent Hightower. In fact, it starts to look like she had personal reasons for murdering cop-killer Todd Johnson (Ep. 10) as well. Jane, however, knows that Todd wasn’t killed by a vengeful CBI agent but by Red John’s mole. Suspecting that Hightower is being framed to take the heat off the real killer, he locks her in his aerie and tries to convince her to go along with his plan.