The Blood Bargain (Unabridged‪)‬

When the world is torn apart by the living dead, the last traces of humanity regroup in the country only to be confronted with a new horror; vampires. Driven by the depletion of their food source, these vampires offer protection for the surviving humans in exchange for blood. An offer that is begrudgingly accepted, forcing the last humans on earth into an uneasy alliance with their predators.