The disturbing 1984 case will be explored in a true crime documentary this week. A violent killer, who claimed the life of a vulnerable woman, will be explored in a true crime programme airing soon. Manchester-born criminal William Thomas Mottershead had a long and violent history before he was finally put behind bars for good. His case will be analysed in the forthcoming episode of Britain’s Almost Perfect Murders titled The Deadly Gentleman, which airs on the True Crime channel on Thursday (