Vampires Vs. Aliens, Book Eight — Keith B. Darrell

They came from another dimension -- a microscopic interdimensional void --seeking bodies to inhabit so they might exist in our dimension. And what better host for these alien invaders than Earth's apex predators: vampires! Both humanity and vampires are at risk, and neither is aware the alien Void Wraiths already walk among them and are infiltrating their abodes.   In Book 8,  Fishing with the Amoeba Guy, teenage werewolf Benton Cartwright makes new high school friends and powerful alien and supernatural enemies. The vampires search for Gaunt, whose blood is being used to synthesize a drug that gives users the attributes of vampires.