House's Head is a 4th season episode of House which first aired on May 12, 2008. House suffers a concussion in a horrendous bus accident and loses his memory of the events just before the crash. However, as he starts to recover his memory, he becomes sure that one of his fellow passengers was suffering a life-threatening illness and risks his own recovery in order to prove that he was right. This episode finished 8th in Facebook's poll of the best episodes of the series completed in April, 2012.