The Clue in the Jewel Box (Nancy Drew Mystery Stories, Book 20)

vi, 216 pp. Blue tweed, Nancy Drew in flats silhouetted in navy blue on front cover, navy blue titles and endpapers, Russell H. Tandy jacket art. "An antique dealer's revelation about a former queen's priceless heirloom starts Nancy on a trail of exciting adventures. Madame Alexandra, now living incognito in River Heights, asks Nancy to find her missing grandson. With only one clue to go on - a faded photograph of the prince at the age of four - the young detective begins her search. Nancy's investigation unmasks a slick imposter and reunites the long-separated family in this suspense-filled story."