Series 18, Episode 2.
Convicted and incorrigible con man Albert "The Prof" Hallows (George Cole) manages to escape from prison and returns to Aidensfield to get his revenge on Sergeant Miller. Taking refuge in a barn, he encounters two small boys. He has the brilliant idea of getting them to do his dirty work for him while making them believe it is an act of patriotism.
PC Younger demonstrates an unanticipated talent for ballroom dancing and steps in to replace Oscar at a charity ball organised by Councillor Joyce Jowett. Dawn whips Younger's dancing into tip-top shape and hethinks she may be carrying a torch for him - until a misunderstanding at the dinner dance almost breaks his heart.
David and Peggy set up a cottage industry making 'artisan' pottery ware.