Thriller set in Morecambe Bay. Kath is a a fishery worker in a small seaside town. Still haunted by the disappearance of her sister Annie two years previously, Kath refuses to move on, even when police investigations wind down and her counsellor tries to persuade her to accept her loss. Convinced that she has spotted Annie in an old piece of CCTV footage, she becomes ever more obsessed with findng her sister. But has she really found an important clue, or is she just losing her mind? Show less