Criminal Minds characters like Reid and Gideon have led to many great pairs, but there are even more that fans can't forget.

Criminal Minds follows the FBI's Behavioral ... Curtis begins his killing spree to get revenge against Erin Strauss, a BAU section chief who had sabotaged Curtis' career with the FBI.

While in hospital, he is visited by ghosts from his past, including Erin Strauss (Jayne Atkinson ... be a rollercoaster ride that will hit Criminal Minds fans right in the heart.