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!

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.

Nick and Kate's relationship is really put to the test. Nick is slacking in his work, whilst James that her quality of work has also reduced. Nick confides in Blaketon and James is there for Kate to talk to about their problems. Kate tells Nick she is pregnant but he is a lot more keen than she is and is upset when she suggests bringing up the baby on her own, because of their ‘unworkable marriage'. Kate ends up performing first aid on top of a church roof, and Nick is annoyed at her for taking the risk going up there, but she informs him simply that its ‘her job'. Later the situation is reversed when Nick arrests a man with a knife. In the final scene Kate tearfully realises the baby and their marriage is most important and is upset to think she may have ruined her and Nick's special time, but Nick comforts her, telling her everything will be all right and the couple make up happily.