Miss Demeanor: the case of the mysterious missing map

"A stolen map. A missing man. A fourteen-year-old detective who doesn't wait for permission. Celia Demeanor doesn't do "stay out of it." Armed with a junior detective badge from her stepdad (a real cop), a metal detector she got for her birthday, and a brain that won't stop picking apart clues, she's spent her whole summer looking for something big to investigate. She just found it. A mysterious old map vanishes from a local shop, and the man who owned it disappears right along with it. The police think he simply skipped town. Celia thinks they're wrong. When she starts digging, she finds threads that reach all the way back to Captain Kidd's lost treasure, a beach full of buried secrets, and a cast of locals who all have reasons to lie. But freshman year is starting, she's got a bully who won't back off, a little sister who insists on tagging along everywhere, and a stepmom who's about to have a baby. Solving a case is hard enough without your whole life pulling you in ten directions at once.