Shelter by Harlan Coben

After the teenage movies, the teenage thillers...

Myron Bolitar has a nephew, Mickey who has just arrived to the United States, after an errand life around the world. He was in a car crash where his father died, and his mother, out of herself with grief has turned to drugs and is in rehab.

Myron is supposed to look after him. But you know how teenagers are! And this one is particularly stubborn and fearless!

In his new school, he meets Ashley, a lovely girl, new to the school, just like him, and they start a love affair, a very shy one, almost impalpable, until Ashley disappears...

And Mickey looks for her. On his quest, he meets some youngsters his age who are going to help him...

And until the end of the book, there's not only the search for Ashley, but the search for his father. Is he dead or alive? Who is the Bat Lady?

The problem is that at the end, you discover that you will have to read the following book....