Dawn by Virginia Andrews
The first gripping novel of suspense in the compelling Cutler family series. Settling into her new school, developing a crush on fellow pupil Philip Cutler and cherishing a secret hope to become a famous singer one day, Dawn Longchamp feels happy and safe. But nothing is what it seems...When Dawn's mother suddenly dies, her world begins to crumble. After a terrible new shock, Dawn is thrust into a different family and an evil web of unspoken sins. Her sweet innocence lost, humiliated and scorned, Dawn is desperate to find her older brother Jimmy again - and to strip away the wicked lies that have changed both their lives forever.