Leviathan (Lost Fleet: Beyond the Frontier Series #5)

Admiral John “Black Jack” Geary embarks on a brand-new mission—to defend the Alliance from itself—in New York Times bestselling author Jack Campbell’s latest action-packed novel…

Two Syndicate Worlds star systems have fallen prey to a mysterious fleet of warships—a fleet controlled entirely by artificial intelligence—that is now targeting Alliance space. The warships are no mystery to Admiral John “Black Jack” Geary. They were developed by his government to ensure security…