The Ghost Brigades

John Scalzi's sequel to Old Man's War introduces the elite Ghost Brigades, the perfect soldiers created from DNA, as they face a growing interspecies threat to humanity. When a superhuman hybrid named Jared Dirac is tasked with uncovering the secrets of a turncoat scientist, he begins to unravel the mysteries behind the betrayal and his own identity. As tensions mount and enemy alliances threaten humanity’s future, Jared must navigate complex loyalties and emerging truths, all against a backdrop of imminent conflict.