Nancy drew 20: the clue in the jewel box - carolyn keene

An antique dealers revelation about a former queens 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.

Nancys investigation unmasks a slick imposter and reunites the long-separated family in this suspense-filled story.