The thrilling new novel from the multi-million copy global bestselling author, 'Queen of Suspense' Mary Higgins Clark.A glamorous cruise on a luxurious ocean liner turns deadly..  Fleeing the humiliating arrest of her husband-to-be on the eve of their wedding, Celia Kilbride, a gems and jewellery expert, hopes to escape from public attention by lecturing on a brand-new cruise ship, the Queen CharlotteOn board she meets eighty-six-year-old Lady Emily Haywood the owner of a priceless emerald necklace that she intends to leave to a museum after the cruise.