Who is Trixie Belden? Trixie first appeared over fifty years ago in The Secret of the Mansion, which was followed by thirty-eight other adventures as generation after generation of readers grew up with mystery-loving Trixie and her friends. Now, after fifteen years, Trixie is back to make fans of a new generation! Covered by vines and hidden by trees, the old gatehouse on the edge of the woods has been abandoned for years. But when Trixie and her pal Honey explore it, they discover more than just dust and spiderwebs inside. The two girls find a huge diamond stuck in the dirt floor! Could a ring of jewel thieves be hiding out in Sleepyside?Campbell, Julie is the author of 'Gatehouse Mystery Trixie Belden #3', published 2003 under ISBN 9780375825798 and ISBN 0375825797.