Gideon's departure from Criminal Minds is somewhat of a cliffhanger. He experienced a few highly emotional cases involving his girlfriend and a suspect he chose to let go that left him doubting his abilities as a profiler and fed up with crime solving in general. He left a note along with his badge and gun at a cabin for Reid to find and was last seen telling a waitress somewhere that he had no clue where he was going next.
Mandy Patinkin who played the role of Gideon on Criminal Minds quit the show allegedly because of creative differences. The character, Gideon, was seen in the first episode of season three leaving a store and driving off.