For centuries, vampires and werewolves have honoured a pact that protects humans from a world of danger and darkness. William is one of them, a fearsome and lethal vampire and the only one of his kind immune to the sun. This gift has turned him into a special being. Into the hope that his species needs. Into the key that the renegades seek to free themselves from their curse. A pact. A secret. A revenge. It is not easy to get rid of darkness when it is part of your soul.