The fair arrives in Aidensfield to the annoyance of local caravan site owner, Edna Plummer. It turns out that her caravan site is used as a convenient meeting place by her criminal brother. He is about to receive some stolen works of art from amateur smuggler, Norman Currie, who is on his way back home from a trip to Holland with his family. Currie's son takes one of the paintings and swaps it for free rides at the fair. Workers at the fair sell the painting to Greengrass who tries to sell it to Ferrenby who realises its true value and tells Nick. Meanwhile two 5 year olds go missing but return unharmed. Kate discovers the children had a mysterious friend, who turns out to be a local man whose wife and child were recently killed in an accident.

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!