A Northampton family, the Colecloughs live on the site of a 900-year old nunnery with a rather fruity past, which was at various times accused of witchcraft, begging and debauchery. The burial of a much loved family pet provides the curious starting point for an investigation. When eight-year-old Amy Coleclough's cat "Paintpot" died and her father dug a grave, he uncovered a large old wall. So Tony and the team dig up their garden, including a mysterious sarcophagi hidden there.