An Anonymous Girl

Jessica Farris is a 28-year-old makeup artist in New York City, behind on bills and carrying a family's worth of money worries. When she takes another woman's place in a paid psychology study on ethics and morality, it looks like easy money: a few questionnaires, a few hundred dollars, and out.

The study is run by Dr. Lydia Shields, a poised and exacting psychiatrist, and the questions soon turn invasive. Jessica is asked to confess things she has told no one. The sessions move out of the office and into hotels and the real world, where she is told what to wear and how to behave.

As the experiment tightens, Jessica begins to suspect that Dr. Shields knows far more about her than she has said, and that the study may have a purpose beyond research. Her hunt for the truth leads her to a former participant named April, and to Lydia's husband Thomas, and the line between subject and target gets harder to see.

An Anonymous Girl is a psychological thriller of manipulation, secrets and obsession by Greer Hendricks and Sarah Pekkanen, the authors of The Wife Between Us. It suits readers who like twisty, fast-moving suspense about who holds the power in a relationship.