Insp. Crossley has an interesting idea as to what has been responsible for a series of attacks on sheep - he thinks a puma did it - much to the Ashfordly Police's amusement!!!!!!!! He keeps to his theory until Alfred is put in the frame for the crime. Claude is ordered to have Alfred destroyed, Claude violently objects and even steels Alfred back. But Nick doesn't believe Alfred is to blame and catches the real culprits in time. They were sheep rustlers, and Blaketon has great fun in informing Insp. Crossley of this fact!

There is an outbreak of rabies which results in the garage owner's death. Blaketon is outraged at the owners if the dog which brought the disease into the country from abroad. However later they discover their own son has been bitten by the dog. Nick asks Claude to help the gamekeepers to look for the dog and the matter is resolved. Ashfordly Police have a new vehicle, which unfortunately Alf damages on its first time out!

Nick and Alf go on a fishing trip to Whitby. Alf is looking forward to a weeks holiday but Nick is there undercover to investigate smuggling. Nick finds out that a container dumped at sea contains counterfeit money. Alf teaches Nick about fishing and they organise a game of poker with some of the suspected smugglers. Nick takes this opportunity to force his opponent to hand over some of the counterfeit money. They are lodging with the Stirling's who own a sailing shop. Jake Stirling helps Nick and Alf set a trap for the smugglers and they are caught. Jake's girlfriend finds out she's pregnant and he wants her to have an abortion. Kate tells her its illegal. Blaketon is taking over Nick's patch while he's away which gives him a great opportunity to keep an eye on Greengrass. However he fails to find out that he's doing a very good trade in venison!

A Russian defector is on the run. A Russian ship docks in Whitby and a fight amongst the crew breaks out in a local pub. One sailor thinks he's killed his skipper and asks Nick for Political asylum. When Nick and Alf take him to the immigration office he makes a run for it and they lose him. Blaketon is not impressed but when the sailor finds out that he didn't kill the Skipper he says he needs to get back on the ship. Nick and Claude arrange a plan to sneak the sailor back onto the ship and it works. During all of this Greengrass has been trout poaching with a priest! Dr Radcliff's daughter goes missing on a cliff side and a search is mounted for her - she is found unharmed.

The hours Kate is working in Whitby is putting a strain on her relationship with Nick. At the moment she is rarely at home except for weekends. Ron Cooper ends up in hospital from a breech explosion from his Lee Enfield .303 Army Riffle. Nick investigates as to why he had the gun in the first place and eventually finds hoards of old army ammunition at Cooper's farm. Greengrass has got hold of some grenades which he uses to clear Lord Ashfordly's river of most of his trout. Mrs Swinton thinks she's pregnant and Kate gives her some pills, which will determine whether she's pregnant or not by the next day. We later see Kate taking them, she tells James that she's pregnant, but she's less than pleased with the idea. She attempts to tell Nick but backs down.

The owners of Abbots Farm are in trouble when an outbreak of tuberculosis hits. Alf has trouble with the car again, only this time he gets it stuck in a river! Nick helps him rescue the car and Claude jokes about some spooky noises in the area. The police uncover some illegal exotic birds.