Mary Margaret and David Nolan (Prince Charming) are having an affair. When word gets out, David’s wife, Kathryn (Abigail), leaves him, but disappears on her way out of town. As the new Sheriff, Emma investigates. At first she questions David, but when Ruby finds a jewelry box belonging to Mary Margaret with a human heart inside of it and MM’s bloody fingerprint on it, she is forced to arrest her best friend. Things get worse when she discovers the murder weapon in their apartment. Emma does everything she can to prove Mary Margaret’s innocence and is convinced that Regina is framing her. All hope is nearly lost until Kathryn reappears suddenly, seemingly having been abducted and then set free. With no murder to be accused of, Mary Margaret is free.