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.