Strange things are happening at Kirlby Moor. A car driver runs down a sheep when he tries to avoid a drunken hiker, Mr. Holroyd goes missing on a fishing trip to the moor and on the bus driving across the moor the conductress Hannah Davis is subjected to indecent exposure by a drunken passenger they had just picked up on the moor. But that is not the only problem for PC Rowan. Sergeant Blaketon keeps him, PC Bellamy and PC Ventress on their toes due to an upcoming inspection at the Ashfordly police station.

The police in Ashfordly have been asked to look out for Stevie Walsh who has been released from prison after serving a ten year sentence for armed robbery. His wife Ellen still lives in Aidensfield and it is believed he will go there to collect the money from the robbery which has never been recovered. But a severe snow storm is brewing and in the bad weather the train carrying Walsh, Gina's cousin Barry and Dr. Ferrenby crashes near the station in Aidensfield, and everybody has to lend a hand in the emergency. To complicate matters Ellen Walsh is pregnant with her new boyfriend and Kate Rowan is out in storm trying to deliver the baby, and she knows nothing about the train crash.