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