When Jessica Farris signs up for a psychology study conducted by the mysterious Dr. Shields, she thinks all she'll have to do is answer a few questions, collect her money, and leave. But as the questions grow more and more intense and invasive she begins to feel as though Dr. Shields may know what she's thinking - and what she's hiding. As Jess's paranoia grows, it becomes clear that she can no longer trust what in her life is real, and what is one of Dr. Shields' manipulative experiments. From the authors of the blockbuster bestseller "The Wife Between Us".