Imagine surviving a freak accident and coming out the other side unrecognizable – not on the exterior, but inside. Where do our personalities live, and how can they shift drastically? In season one, we covered miraculous talents resulting from traumatic brain injury. On this episode, we’ll head to the dark side of personality change with the stories of Phineas Gage, Eadweard Muybridge and someone whose identity became the personae of whoever they were nearest.