A lion breaks loose in Seattle, leaving a couple's lives and relationship at risk; Lexie overhears Mark's discussion about moving in with Julia; Watch Grey's Anatomy Season 8 Episode 18. Teddy begins to take steps coming to terms with Henry's death; Callie grills Arizona on her past lovers; and Alex requests to be taken off Morgan's preemie case when she becomes too dependent on him. Watch Grey's Anatomy Season 8 Episode 18.
