Who's Ju?

"Justina 'Ju' Feliciano and her fellow seventh-grade sleuths are on the case! A sneaky vandal has damaged scenery from the middle school drama club production and the newbie detectives must catch the culprit before opening night. But Ju faces a completely different kind of mystery when a genetics assignment forces her to investigate the cold hard fact that her frizzy blonde hair and amber eyes don't match the shades of brown that run in her family. This is one case she wishes she didn't have to solve. Only there's no escaping the Blueprint of Life Project, so Ju searches the attic for family documents she needs to complete her schoolwork. Instead, she discovers strange clues that make her wonder if her parents are keeping a huge secret"--Amazon.com.