"What Happened and What's Going On" is the ninth episode and mid-season premiere of the fifth season of the post-apocalyptic horror television series The Walking Dead, which aired on AMC on February 8, 2015. It marks Chad L. Coleman's final appearance as series regular Tyreese. It also features several appearances from deceased characters in Tyreese's hallucinations. The episode was written by series showrunner, Scott M. Gimple, and directed by Greg Nicotero.
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