This episode is titled "Living Nightmare." In it, Melinda and Eli work together to solve a hospital mystery that has a ghost haunting a patient. Is this patient seeing demons? Something tells us this will be a very spooky episode!
When a specific group of guests at a wedding dies of asphyxiation, the crime has the Fringe team investigating how the toxin was delivered and targeted. Ties are found linking the toxin to the Bishop family.