Book 1, FallUnknown - 2012
Initially investigating the disappearance of border agents along the U.S./Mexico border, CIA operative Jonathan Keene soon discovers another enemy waiting right at America's doorstep. This enemy is swift-- with sights set on something more precious than gold. As the U.S. is pushed into a situation it hasn't seen since its inception, Keene teams up with FBI agent Megan Taylor to fight an unforeseen enemy and is forced to face a past he'd rather leave buried. Can Keene-- and America-- survive?