The day of the wedding between Dr. Liz Merrick and Ben Norton is growing near, but the happy event is overshadowed by Jenny's mental illness and Sergeant Merton seriously considers getting a transfer to be near her and able to support her. PC Walker finds an abandoned car on the moor. It is registered to Angela Price, who has been kidnapped and the kidnappers have told her husband not to involve the police. But Sergeant Merton knows Price and finds out anyway and he suspects that the kidnappers hide out in a farm they have rented from Lord Ashfordly. Ben Norton nearly misses his wedding when he is asked to assist the police because he knows the premises.