A Death in the Family (S01E10)

Castle and Beckett look into the murder of a plastic surgeon who has been missing for a week, only to be discovered dead in his car parked on the street. As they explore the dark and complicated lives of patients obsessed with surgery and hidden procedures, Castle faces a personal milestone with Alexis going to her first prom. Meanwhile, while investigating Beckett's history, Castle uncovers details that could jeopardize their relationship for good.