Described as a “wolf in sheep’s clothing,” Russell A. Pritchard, already in prison for stealing from clients, has admitted to duping additional people who hired him to sell their antiques. The former owner of Bryn Mawr Auction Company and an appraiser on "Antiques Roadshow," who was booted from the show for staging Civil War relic "discoveries," pleaded guilty in court to new charges of deceptive business practices, theft by deception and theft by failure to make required disposition of funds.