Audiobook The Darkness Within, written by Graeme Hampton. Evil lurks in the city streets. A man is discovered on a leafy North London street, fighting for life after a brutal beating. DI Matthew Denning and his team are quickly called in to track down the monster responsible. Except the victim is hiding secrets of his own. His name shows that he was reported missing two decades ago - but it's clear that the missing person is not the same man lying broken in a hospital bed.