"Do Over" is the fourth episode of season 5 It features two main storylines; one about Delia's love life, and one about a ghost that is haunting the hospital where Jim works. The episode starts with a couple of kids breaking into the morgue and one of them being haunted by a ghost. When he is rescued from the morgue by the police the next day, having been abandoned by his friend, he tells them that the morgue is haunted. Jim brings home an antique surgical instrument, tht unbeknownst to him has a ghost attached. This causes Aidan to feel that he's done something wrong.