Scotch on the Rocks (S03E07)

Vicky discovers an ancient claymore in her attic, sparking intrigue. Lovejoy acquires the sword at an auction and is soon tempted with a lucrative offer, prompting him to delve deeper into its history. His investigation reveals that the claymore serves as a map to hidden treasure. However, he soon realizes he's not the only one seeking it, as others attempt to steal the sword. The hunt for the treasure proves challenging, as it lies buried beneath a newly constructed supermarket.