2nd printing of the first edition of this story, with plain paper frontis, war time paper notice, and lists to 21 on the jacket.  Previous owner's name on the (orange silhouette) FFEP. Jacket with tide marks, chips missing. Blue boards share the tide marks. Grosset printed one new Nancy Drew Story a year, and revised the stories in the mid 1950's. 

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, which rapidly involves her in a series of dangerous and harrowing adventures. When Nancy needs help, she calls on Bess, George, Burt, Dave, and her special friend, Ned. How Nancy's discovery of the heirloom's secret unmasks a slick imposter and reunites the long-separated family climaxes this suspense-filled mystery story.