Fly to Africa, where they'll pin it on gypsy spirits or something, then spend the rest of my life studying everything until I learn of every art, science, and fact in the universe. Victims will be drained until dead, so as not to cause a consequential exponential increase in vampire numbers which inevitably would lead to either our discovery, hunting, and extinction, or our overpopulation and shrinking food supplies.
Eventually build moon base and begin collection of historical items and people of interest. Create a headless horsemen in an attempt to see afterlife.