When a woman is found dead in the early morning by the side of a railway line Hardy is brought in to help the police with their investigations. The woman has been murdered, and as they piece together a picture of the man, the police and Hardy realise that they have a dangerous psychopath loose in their area. Dead women, trains, wedding rings, a lipstick, and a glove are all links in this macabre investigation. Guest star Joby Blanshard, Alethea Charlton and Michael Hawkins.