Book 4 of the bestselling Crimson Worlds series... The Alliance and its colonies have called a truce and signed the Confederation Agreement, providing the frontier worlds with guarantees of self-government. No one expects the deal to last, and both sides are preparing for the next showdown. But from the depths of space another challenge is coming, one that will endanger the very survival of mankind and force not just the Alliance and its colonies, but all of the Superpowers, to join forces or face annihilation. The dusty ruins the Alliance discovered on Epsilon Eridani IV were built by an ancient race, eons dead. But their guardians remain, and the disturbance of the long silent cave triggered an automated alert, one which has been heard. Erik Cain and his Marines grimly take to the field once again, for what may be their final battle, against the robotic legions of the First Imperium. But facing a ruthless and technologically superior enemy may be easier than learning to fight alongside old enemies. Also by Jay Allan The Crimson Worlds Series Book 1:  Marines Book 2:  The Cost of Victory Book 3:  A Little Rebellion Book 4:  The First Imperium Book 5:  The Line Must Hold Book 6:  To Hell's Heart Book 7:  The Shadow Legions Book 8:  Even Legends Die Book 9:  The Fall Crimson Worlds War Stories (Crimson Worlds Prequels) The Far Stars Series Book 1:  Shadow of Empire Book 2:  Enemy in the Dark Book 3:  Funeral Games Far Stars Legends Series Book 1:  Blackhawk Book 2:  The Last Showdown (Coming 2017) Crimson Worlds Successors Series Book 1:  MERCS Book 2:  The Prisoner of Eldaron Book 3:  The Black Flag (Coming 2017) Crimson Worlds Refugees Series Book 1:  Into the Darkness Book 2:  Shadows of the Gods Book 3:  Revenge of the Ancients Book 4:  Winds of Vengeance Book 5:  Storm of Vengeance (Coming 2017) Portal Wars Series Book 1:  Gehenna Dawn Book 2:  The Ten Thousand Book 3:  Homefront Pendragon Chronicles Book 1:  The Dragon's Banner Jay Allan writes science fiction and fantasy from his home in New York City.