"Red John" is the eighth episode of the sixth season of The Mentalist. Written by series creator Bruno Heller and directed by longtime director and executive producer Chris Long, the episode marks the conclusion to the series' long-running Red John storyline, which had been developing for the entirety of the series. It is also the final episode of the series to incorporate the word or concept of the color red into the episode's title. "Red John" originally aired on November 24, 2013.