In this sequel to The Flow, amid reports that her dad has escaped from detention, Lexi Drachmann is determined to make the people of Oxford aware of what their rulers are hiding from them. But the Enforcers are tracking her every move, her mum is watching her like a hawk and she can't ask Lukas for help because she's made a deal not to see him again. A secret organisation known only as Scientia might be able to help... but who exactly are they... and can they be trusted? What will happen to Lexi when she tries to find out?