The Wall was built to keep them safe. Or so they thought.

For as long as seventeen-year-old Apothecary Rose Allgood can remember, the towering stone Wall surrounding Noah’s Valley has protected her people. No one leaves. No one fights. And no one questions why.

But their paradise has been hiding its thorns. When Rose’s mother becomes the Valley’s first murder victim and her twin brother is swiftly condemned, she alone is searching for the killer. Determined to find the truth and forced to ally with the son of her nemesis to solve the crime, Rose follows a trail of hidden messages, forbidden knowledge, and whispers of a past no one dares remember.

The deeper she digs, the more certain Rose becomes that her mother’s death was no accident. That the Wall isn’t just keeping something out.

It’s keeping something in.