Caught - Harlan Coben

Haley McWaid never gave her parents a moment's worry. Until one morning her mother wakes to find that her seventeen-year-old daughter didn't come home the night before. The community is stunned by her loss. Three months pass without a word and everyone assumes the worst. Wendy Tynes is a reporter on a mission: to identify and bring down sexual predators. Her latest target is a social worker known as a friend to troubled teens. But Wendy soon realises she can't trust her own instincts - or the motives of the people around her - and that this story is more twisted than she could have imagined...