Time Travel Universe

Quinn Black thought his work was finished. After all, in the years since he discovered he could time travel, he saved the human race from disaster and restored hope to the world. At least in the current timeline of the universe. Out in the multiverse, the Earth—and everyone he loves—is in trouble again. Someone sent Quinn's team a video begging for help. If Dr. Green's assessment of reality is correct, how will he find his way home if he gets lost in the vast expanse of the cosmos? However, the alternative might be worse. Now Quinn finds himself traveling through spacetime to Egypt to stop whatever trouble is lurking in other realms before it finds its way into his. But what he finds is an enemy more dangerous than anything he imagined. Some entity is annihilating civilizations, and unless Quinn can stop them, his is next.