Don't trust them.

Sixteen-year-old Mae feels lucky to have grown up at Hummingbird Creek, an elite wellness retreat her father, a prominent psychiatrist, built for rich teens with psychological problems.

At the Creek, every aspect of daily life is monitored to ensure optimal health. Vitamins keep you balanced. Rules keep you safe. And no one asks what happens to the data. But when a patient dies after a terrifying outburst, Mae starts noticing glitches: deleted files, altered timestamps, missing pills—nothing at the Creek is what it seems.

In a place where therapy feels like surveillance, Mae must decide how far she’ll go to expose the truth…

This spine-tingling teen thriller is perfect for fans of Karen McManus and Holly Jackson.

Former journalist Sue Wallman, now a secondary school librarian, is an award-winning author and one of the UK's top teen thriller writers. Her debut featured in the WHSmith/Zoella book club.