From the internationally bestselling authors of the wife between us comes a mind-blowing thriller of betrayal, obsession and dangerous truths. From Greer Hendricks and Sarah Pekkanen, the authors of the top ten bestseller The wife between us, comes an anonymous girl - An electrifying novel about doubt, passion and deadly obsession... Seeking women ages 18-32 to participate in a study on ethics and morality. Generous Compensation. Anonymity guaranteed. 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 and the sessions become outings where Jess is told what to wear and how to act, 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 is real in her life and what is one of Dr shields's manipulative experiments. Caught in a web of deceit and jealousy, Jess quickly learns that some obsessions can be deadly. Here's what readers are saying: 'if you hear a lot of hype surrounding this book, it's not just jibber jabber, this is a smart, chilling and suspenseful novel that doesn't let you off the hook until the very last page' 'A great read that has me looking over My shoulder and questioning My daily choices and interactions' 'Deceit, jealousy, obsession, paranoia - An anonymous girl has this in bucket loads'.