Dead Angels: Kiera Hudson Series Two (Book Three)

Fleeing Hallowed Manor and being hunted by the Skinwalkers, Kiera and her friends take shelter from a storm in a deserted railway station set in a remote valley. As they spend the night hiding from those who are hunting them, Isidor tells his friends a story about how he had come across the word PUSH some years before on his first journeys above ground. But unknowingly, Isidor's story will have devastating consequences for one of them.