A mind-bending mystery for anyone who's ever asked questions from the award-winning Christopher Edge. "A writer of genuine originality" - Guardian It's Maisie's birthday and she can't wait to open her presents. She's hoping for the things she needs to build her own nuclear reactor. But instead she wakes to an empty house and outside the front door there is nothing but a terrifying, all-consuming blackness... Trapped in an ever-shifting reality, Maisie knows that she will have to use the laws of the universe and the love of her family to survive. And even that might not be enough... How do you know you really exist? It's time to find out what's real! "Give this man his own place on the periodic table!" - The Times Check out these other brilliant books from Christopher Edge: - Black Hole Cinema Club - Escape Room - Twelve Minutes to Midnight - The Jamie Drake Equation