A preternatural killer stalks the streets of San Francisco, leaving a trail of drained corpses to be found by the human authorities. Desperate to protect the vampire's secret the city's Enforcer calls on the Assassin to put a stop to the spree. An ancient order, long thought dead rises from the ashes of history bent on death and the destruction of all vampires. And Morgan Blackstone stands in the eye of a gathering storm that will change everything.