From the Universe of Doctor Who. Like all teenagers, the students at Coal Hill Academy have hidden secrets and desires. They are facing their own worst fears, navigating a life of friends, parents, school, sex, sorrow – and possibly the end of existence. The very walls of space and time are starting to thin. Something is pressing on the other side: something waiting for its chance to kill everyone and everything, to bring us all into Shadow. Fear is coming. Tragedy is coming. War is coming.