This is book number 1 in the Homelanders series.
Charlie West just woke up in someone else's nightmare. He's strapped to a chair. He's covered in blood and bruises. He hurts all over. And a strange voice outside the door just ordered his death. The last thing he can remember is that he was a normal high-school kid doing normal things: working on his homework, practicing karate, daydreaming of becoming an Air Force pilot, writing a pretty girl's number on his hand. How long ago was that? Where is he now? Who is he really? And more to the point.... How is he going to get out of this room alive?