The nascent intelligence apparatus of the young United States survived the end of the Revolutionary War, ultimately fighting a undocumented war with a supernatural threat that had -- for lack of a better term -- invaded the young nation in the closing days of the 18th century. Vampires, particularly powerful in New England, preyed upon isolated villages and families, spreading a plague of undeath hidden among the vast number of contemporary cases of pulmonary Tuberculosis. Even as an ultra-secret espionage organization fought them, these vampires used influential men among America's elite to forward their agenda: Aaron Burr may have been one of their most prominent human agents, as might have been prominent diplomat and former Presidential secretary Tobias Lear.