Three things 16 year old Brinn doesn't kw: 1. Her father, the most boring man in Sippar, was once a Section Seven Agent. 2. Civic police monitor every exit from the city. 3. Brinn is only three quarters human. Civilisation balances on the brink of greatness. The El have come to help humanity evolve beyond biological life. Brinn has a journal hidden under her mattress written in blood. Nody's listening. Her dark curiosities are misunderstood as attitude, her grades are slipping, and the cruel Master Mordek has it our for her. But there's a stranger in a dark uniform on her doorstep and everything Brinn once believed to be true is about to be turned on its head.