S6E4 · Here's Not Here

In flashbacks, Morgan is living in the woods after burning down his apartment in a fit of insanity. He stumbles upon a secluded cabin and shoots at its sole inhabitant, psychiatrist Eastman, who knocks Morgan out and puts him in a cell. The two gradually bond as Eastman teaches Morgan aikido and a philosophy that all life is precious. After Eastman is bitten by a walker, Morgan kills him before he can turn, leaves and discovers a sign that leads to Terminus. In the present, Morgan tells his story to a Wolf he had secretly taken prisoner, in hopes of inspiring him to change his ways.