Women aged 18 to 32 are invited to participate in a study of moral and ethical principles. Generous rewards and anonymity guaranteed. Going into the study, Jessica believed that she would just have to answer a few questions, and then she could get the money she desperately needed and forget about it forever. Question No. 1: Could you lie without a twinge of conscience? But the questions become more and more personal and poignant - and gradually Jessica begins to feel that Dr. Shields knows everything that she thinks and everything that she is trying to hide. Question No. 2: Have you ever deeply offended someone who do you care? Soon, Jessica ceases to understand what is reality in her life and what is a simulated psychological experiment. How dangerous can human obsession be? Question No. 3: Punishment should always be proportionate to the gravity of the crime? A poignant new thriller from the authors of the best-selling The Wife Between Us tells the story of passion, the cost of trust and the destructive depths of the human soul.