Just saw this - looks like a good book, and it's free!
A shocking psychological thriller: Benjamin Walker has taken a new and lucrative job working on a project named Lucy, a machine capable of recording a person's dreams in intimate detail. After years of testing experimental medicines and participating in repetitive sleep-related studies, all is finally going well for Ben ... until strange dreams begin to plague him and memories once hidden begin to reveal themselves. The doctors and staff on project Lucy are not who Ben thinks they are, and the organization will stop at nothing to keep his emerging memories buried for good. At the heart of it all, his worst enemy is his own mind, and he must confront his past in order to save his future.