EXOSKELETON IV: REVENANT (The Exoskeleton Series Book 4)

William Thompson awakens in an unknown place and senses a clock ticking in the back of his mind. He realizes that he's made a promise that he might not be able to keep. Jacob Hale embarks on his first assignment as an Omniscient. Denise Walker and Jonathan McDougal are called back to Space Systems, joining Daniel Parsons and Sylvia Barnes in a mission that has final and existential consequences as the world is cast into a grave tribulation. Someone is coming ...