A thrilling suspense novel that introduces New Scotland Yard's InspectorJack Oxby of the Art and Antiquities Squad and pits him against a mastermindof art forgery.When an original Leonardo da Vinci folio goes missing from the Royal Libraryat Windsor Castle, Oxby is brought in to investigate. Traveling from Londonto New York and Lake Como, the detective eventually uncovers a daring artforger who blackmails artists into faking Leonardo da Vinci manuscripts, including early sketches of the Mona Lisa.