End of Days — William Woodall

In the year 2154, the world has become a dangerous place. Extremist groups would like nothing better than to wipe out humanity completely, and even the people sworn to defend civilization against such threats have become deeply corrupt and untrustworthy. When a virulent plague destroys all warm-blooded life on Earth, a small band of survivors clings to life on the partially-terraformed Moon. But fresh dangers lie in wait for the unwary; nor have they left behind all the wickedness in the hearts of men. Nightfall: When Micah McGrath suddenly finds himself thrust into a dangerous and ugly future after a lab accident, his only choice is to make the best life for himself that he can. But when the secret police get wind of his research into time travel, he soon finds himself in deep trouble indeed. Tycho: Tycho McGrath is a high school honor student in Florida when he discovers a terrifying secret: a man-made bacterium is about to wipe out all warm-blooded life on Earth within days. The only hope for survival is to flee at once, a plan which carries its own set of unexpected dangers. Avenger: After spotting an SOS coming from the abandoned Moon, the survivors must organize a rescue mission. But the expedition quickly becomes far more complicated, leading them to the icy world of Titan in search of a holy mountain that no human eye has ever seen. Freedom: When a cruel and power-hungry military commander on Venus decides to reconquer Earth, the only thing he needs is the formula for Tyke's Orion vaccine. The survivors soon find themselves locked into a bitter battle over the future of mankind, and who will inherit the Earth after all. Elysium: What began as a simple mission to recover lost comrades in the Martian desert quickly turns deadly when Tyke and the others find themselves stranded on the Red Planet, with only the slimmest of chances to make it home again, or to fulfill the destiny which God has in store for them. The Tyke McGrath Series is a clean and wholesome science fiction adventure with a mild Christian flavor, suitable for anyone who enjoys space exploration, alien societies, and a touch of young romanticism.