In this episode of Grey’s Anatomy, board member Larry Jennings (Mitch Pileggi) and the Chief start an investigation when a burn victim (guest star Erinn Hayes) dies unexpectedly in the ER. As the men suss out which resident is responsible, each doctor tells a different piece of the story. By the episode’s end, the mystery is solved and yet another surgeon scrubs out of Seattle Grace for good. So who was to blame? Let’s find out.