y Alison Gilligan takes YOU on a sleuthing adventure with your sister to uncover the mystery of an old shipwreck and your own father's disappearance. 9-12 year old readers will dig for clues in an old diary, uncover a family secret, go deep sea diving, and foil a plot to steal invaluable jewels. Choose Your Own Adventure Pirate Treasure of the Onyx Dragon is an interactive adventure book in which YOU decide what happens next. What is your beloved - but weird! - Aunt Lydia hiding from you and your sister? Going against her wishes and searching for clues about the shipwrecked Onyx Dragon and the jewels it is said to have carried, do you search for a hidden map or follow the mysterious lights that appear in the sky? Do you break up an international crime ring or become a jewelry thief, yourself?