Hero Complex (Keaton School series #2) by Margaux Froley (Soho Teen hardcover, 14 October 2014).
It's the beginning of the second semester of Devon Mackintosh's junior year at the prestigious Keaton School.
Just a week earlier, she'd spent New Year's Eve with poor little rich girl Cleo Lambert on Mr. Lambert's yacht. Devon gets confused in the maze of corridors, and is struck on the back of the head, hard enough to knock her out. Cleo's parents prefer to believe that Devon had too much champagne, fell, and hit her head, but both Cleo and Devon know that isn't true.
She is no longer assigned to Mr. Robins, the school psychologist who had encouraged her to be a "peer counselor" the previous term. In his place is psychotherapist Dr. Jocelyn Hsu, who, though she drinks herbal tea and wears flowing dresses with thick socks, makes Devon nervous. She's pretty sure the doctor is hiding something, and she plans to determine just what that something is.
Meanwhile, Devon's mother doesn't seem at all pleased when Devon unexpectedly goes home for a weekend, and behaves very oddly in general.
Devon is determined to find out what is going on, and how she -- who knows little about any of these people -- is involved.
Readers who enjoyed Escape Theory will be thrilled to share Devon's quest for the truth, but should be prepared for all the questions that arise when she discovers it. Perhaps there's a third Keaton School book coming?
FTC Full Disclosure: Many thanks to the publisher for the Advanced Reading Copy.