Bart and Erica try to help a woman who presents with Delusional Parasitosis. A young athlete's future hangs in the balance when he is brought into the ED after having both feet nearly severed by a train. Bart and Erica make a surprising discovery about Von's personal life. Charlotte has her first day back in the ED after maternity leave but by the end of the day - after an announcement that catches the whole Emergency Department by surprise - she's left wondering if it was worth coming back at all. Cate's world is thrown into a tail spin when she receives a devastating phone call regarding her mother.