Fourteen-year-old Maggie Ogden thinks she knows everything there is to know about Grandfather Clement Clarke Moore and his legendary poem, Twas the Night Before Christmas. All this changes Christmas Eve 1854 when Chelsea Manor receives an unexpected visitor - Henry Livingston; a young man searching for evidence to provide his grandfather, Major Henry, is the true author of the famous holiday poem. The night takes a strange turn when Maggie and Henry...