As academic Robert (Andrew Lincoln, "Waking the Dead") continues to document Alison's psychic abilities, she accepts that the spirits she has seen since she was a child will never leave her. After nearly dying during a seance in which she was inhabited by the spirit of Robert's dead son, she determines that the dead should not dictate her life and she wants help the living. Robert, meanwhile, is in turmoil. Once a total skeptic, his beliefs have been shaken by what he witnessed at the seance and he now struggles to make sense of his life. But Alison's new found security is quickly shaken up by a terrifying presence: for the first time in her life she is being haunted by a spirit from her own past, a ghost she must learn to confront if she is to hold onto her sanity. Episodes Include: "Roadside Bouquets", "The Rat Man", "Lullaby", "Your Hand in Mine", "Mirrorball", "Mind the Bugs Don't Bite", "Things Forgotten", "A Name Written in Water".