Nineteen-year-old Ness used to be terrified of Nightmares - people who'd turned into their worst fears while they slept. Now, after two assassination attempts, an explosion, and a bargain with a demon, she's finally free of her terror. But Nightmares aren't the only dangerous thing in Newham. And Ness still has to reckon with her other fears - including her fear of mortality. It's easy to die in Newham, but hard to live. So when the monster responsible for creating Nightmares asks her for a favour, she agrees - as long as he will turn her into an indestructible Nightmare of her choice in exchange, so she can finally feel safe.