Inspector Crossley from Whitby arrives at the police house to see Nick, but is angry to find the police house being used as a doctor's surgery by Kate. Crossley then goes to Ashfordly station where he's been expected expressing his annoyance about the situation. Blaketon and Nick both assure him however it's just a temporarily situation until Kate can find a new surgery. Crossley also informs Blaketon of some major changes in the Ashfordly area, which will include a far bigger beat for Nick. Kate in the meantime goes out with her old friend Sally, who's also a GP for a drink and a general chat. Sally tells Kate of a job that's going in Whitby, but Kate isn't interested. Sally then puts Kate's name forward to a Dr. James Radcliffe who owns his own practice in Whitby. Radcliffe writes to Kate offering her a job with his practice and Kate is then tempted to take him up on his offer, but Nick however is reluctant to leave Aidensfield. A coach trip meanwhile is organised to hear Gina sing a

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!

Insp. Crossley suspects an old woman of being responsible for an attack of food poisoning, but Kate soon discovers it was due to something entirely different - arsenic poisoning from old wall paper. Nick points out to Blaketon that the Insp. hasn't been keeping CID fully informed which soon puts an end to his presence in Ashfordly. The police are also surprised to discover that their new Inspector is a woman - Insp. Merchison!