What is a short summary of the story, The DiDomenico Fragment, from the collection, Table For Two?

The DiDomenico Fragment is the story of a man named Percy Skinner who is approached by an art dealer, Sarkis, with an opportunity to make some money as a finder's fee if he can track down and procure some precious fragments of a larger painting by the artist DiDomenico, which has been passed down and divided within Percy's family for generations. Percy identifies his nephew, Peter, as the most likely candidate to give up his fragment, and begins manipulating Peter and his wife and child to convince them that the painting must be sold. Percy's devious plan ends up backfiring, as a separate art dealer follows his every move and swoops in to complete the deal at the final moment, but Percy finds himself in possession of something different: a relationship with his family.