In the latest Roadshow's Most Wanted segment, ANTIQUES ROADSHOW investigates a story about stolen art from South Carolina's Hobcaw Barony estate with appraiser Debra Force and a former FBI agent. Discoveries from ROADSHOW's visit to Myrtle Beach include an 1860 letter signed by Abraham Lincoln, a gift of crystals from Marilyn Monroe and an 1850s South Carolina sword valued at $30,000-$40,000.