Were Jane and Lisbon called to the scene or did they track it down themselves on The Mentalist? "Red John" is the eighth episode of the show's sixth season.
Pictured in this scene from The Mentalist Season 6 opener: Simon Baker as Patrick Jane, Robin Tunney as Teresa Lisbon, Jack Plotnick as Brett Partridge.
Jane and Lisbon end up in a Wild West town when the own turns up dead on The Mentalist. "Red Letter Day" is the 19th episode of the show's fifth season.