Global effort underway to recover stolen Louvre jewels

French police continue the search for jewels stolen from the Louvre, private investigators are also stepping in. All eight missing pieces have already been added to the world’s largest stolen art database, which lists some 700,000 works. In London, a team of experts that has been tracing lost artworks for more than 30 years is working to help return them to their rightful owners. Camille Knight reports.