Rounding up a 4.5.I gulped this book in a few hours. I'd say that's a sign for a good story.Anna lives with her father in a farmhouse. In their basement is a lab. In the lab.... 4 boys. In cells. They've been there for years.The boys are part of an experiment. Their memories have been wiped clean. They were given alternative personalities. When they escape and take Anna with them, it's a race against their captives. And they also must learn who and what they are.Anna is also in love with Sam, the leader who in turn, has a special connection to Anna. When they discover that connection, Anna's world will be torn to shreds, too.This book was just released, but I already can't wait for book 2.