A rare Celtic cross is stolen from Charlotte's aution house, after Lovejoy asked the porter to let a friend look at it. Charlotte and Lovejoy set out on the thief's trail and find themselves on a treasure hunt in the west of Wales. But they are not the only ones after the cross.
Charlotte turns down Lovejoy's invitation to share a bedroom at a village inn.
Lovejoy has been left to look after Felsham Hall until it has been sold, and he uses the house as a furniture showroom. He thus crosses swords with the beautiful Charlotte Cavendish, who is the auctioneer selling the Hall. At the auction, Charlie Gimbert buys the property, and Lovejoy agrees with him to rent the stables for Lovejoy Antiques.