Long Way Home by Andrew Klavan

Sometimes you have to go home to find out who you really are.

Charlie West went to bed one night an ordinary high-school student. He woke up a hunted man. Terrorists are trying to kill him. The police want to arrest him for the stabbing death of his best friend. He doesn’t know whose side he’s on or who he can trust. With his pursuers closing in on every side, Charlie makes his way back to his hometown to find some answers. There, holed up in an abandoned mansion, he’s joined by his friends in a desperate attempt to discover the truth about a murder he can't remember—and the love he can never forget.