An elderly couple have been arrested on suspicion of killing their daughter who died after two decades battling an extreme form of Obsessive Compulsive Disorder. Ken and Marion Hancox, who are both in ill health, have spent eight months under suspicion of the manslaughter of their housebound daughter, Samantha, a former law student. The 40-year-old developed a crippling phobia of germs which forced her to shower up to 20 hours a day and left her incapable of cooking for herself. She developed the disorder as a student and had needed constant care from her parents ever since. By the time...