Alex Ferrenby is knocked down by two men who break into the surgery and steal amphetamines. Afterwards they speed away in Greengrass' pink Chrysler Imperial. To stop the drugs from getting into circulation PC Rowan checks out the schools in the area and is surprised to learn that sergeant Blaketon has a son. But he is looking in the wrong places. Gina is on a girls' night out with her friend Debbie who is rushed to hospital after getting a couple of the pills in a disco. Kate Rowan is worried about Mavis Briggs who is pregnant and has a history of severe morning sickness and miscarriages.

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.

PC Bellamy is in trouble. There was a break-in on his beat while he was visiting one of his girlfriends. Witnesses noticed a noisy minivan speeding away from the scene of the crime immediately afterwards. An anonymous tip leads to part of the loot - and Phil Bellamy's address. Blaketon has no choice but to suspend him from duty. Greengrass notices a fast, black greyhound and spots an opportunity to make a bob or two because it's a dead ringer for ruthless businessman Jack Scarman's somewhat slower dog Northern Flash. If only they can "borrow" it from its owner Mr. Parrish and swap the two.

A series of illegal knuckle fights has been taking place all over North Riding and sergeant Blaketon asks his constables to look out for Irishman Michael O'Leary, who is suspected of being behind them. Not surprisingly O'Leary is spotted at Claude Greengrass's place. Martin Lessor is attacked in his home, but the attacker Victor Kellerman is much more eager to see the case in court than Lessor is. To complicate matters Lessor, who is a diabetic, will only allow Alex Ferrenby to look into his medical files, but Ferrenby is away on a fishing trip.

Susan Siddons is looking after her old nanny Mary Begg, but one morning she comes to her house the old lady is dead. And that with Susan's wedding only a couple of days away. When Mary's grandson Peter, who is also Susan's old boyfriend, arrives in Aidensfield to take care of the funeral he gets a chilly reception by her father. The next day all the wedding presents have been stolen. And that is just the beginning. Kate's aunt Eileen tells her she has inherited a lot of money from her uncle. Kate initially refuses to accept the money, but then donates it to an old people's home.

Greengrass is walking his dog Alfred when Raymond Walker takes a shot at him for trespassing. And Greengrass is not the only one having trouble with Walker. He has offered Jane Thompson to buy her cottage after her husband's death, but the old lady has been the victim of harassment since she turned down his offer. She does not want to sell even though she can live with her daughter Jennifer and her husband. Alf Ventress saves a cute, little kitten from drowning and keeps it at the police station to the great displeasure of sergeant Blaketon.

DJ Tiny Weedon is assaulted after playing at a dance at the village hall in Aidensfield. Weedon claims nothing was taken, but word has it that drugs were involved. And according to young Karen Fletcher, who witnessed the assault, sergeant Blaketon's son Graham was one of the assailants. Greengrass delivers a letter to "Sweaty" Betty Such from her late husband Arthur. A few days later PC Rowan is knocked down with a spade at the church yard and the very next morning somebody has been trying to desecrate old Arthur's grave.

David Stockwell is fascinated by dogs he hears in the forest in the middle of the night. The dogs belong to a group of men involved in illegal badger digging, and when they drive away they hit David's mother with their car. She knows more about the matter than she is willing to tell and makes her backward son change his statement, but PC Rowan has already found a piece of glass from the headlights of the car that hit her and knows he is lying.

The arrival of a young American, Charlie Dameron, divides the population of Aidensfield in two. Some think he is only dodging military service in Vietnam while others do not mind his presence. Among the former is Fred Manchester, who also blames him for causing an accident. Among the latter is Claude Greengrass, who sees yet another opportunity to make some money - by selling classic motorcycles to Dameron. Only, Greengrass does not have any motorcycles to sell - yet!

An ill wind called Inspector Crossley has blown into Ashfordly police station. Crossley will be supervising Ashfordly and Aidensfield and is known to clamp down on any violation of regulations. Things do not get off to a good start when he finds the police house in Aidensfield used as a temporary surgery by Kate Rowan. Gina is happy because she has got a gig singing at a night club in Whitby. It causes quite a stir when half the village turns up to listen to her. Kate is visited by Sally, an old friend who has a proposition that makes her think. Greengrass's fate has finally caught up with him - in the shape of the Inland Revenue! Graham Blaketon's day in court for his participation in the assault on Tiny Weedon is getting nearer and Blaketon tries to spend more time with him.