Like Birdie Adams didn't have enough problems this summer. But Birdie's Birdie. And if a long-buried box has and "Open if you dare and " written on its lid, then Birdie and her best friends, Ally and Rose, are going to open it.And now, along with everything else that's going on - Ally's pitching slump, Rose's banishment to Britain, and Birdie's annoying younger sister being, you know, annoying - the best friends are caught up in solving a mystery planted by a dead girl forty years ago.