Autumn: The London Trilogy by David Moody

Two months ago, billions of people were killed by a deadly germ. Days later, they rose again in massive numbers. Since then, cities worldwide have become corpse-filled, rat-infested, germ-choked hellholes. A group of people are trapped in central London, hopelessly outnumbered by the dead. They hear rumors of a safe haven in the north—a self-sufficient community where people from across the country have gathered to try and rebuild their lives. But the decaying ruins of the capital are vast and sprawling, and they’re going to need an army to get away from this place.

Two months ago, billions of people were killed by a deadly germ. Days later, they rose up again in massive numbers. Since then, cities worldwide have become rat-infested, germ-filled hellholes, ruled by the living dead. A group of survivors are trapped in the rotting heart of the capital, hopelessly outnumbered. They've heard rumors of a safe haven to the north—a self-sufficient community where people can rebuild their devastated lives—but the decaying ruins of London are vast and sprawling, and they're going to need an army to get away from this place.

Two months ago, billions of people were killed by a deadly germ. Days later, they rose up again in massive numbers. Since then, cities worldwide have become rat-infested, germ-filled hellholes, ruled by the living dead. There are 300 survivors grouped together in the shadows of the Tower of London. On one side, the river Thames. In all other directions, nothing but the undead. With so many mouths to feed, food is at a premium. But if they can make it through winter, they'll have a shot at long-term survival.

A great fire has swept through the heart of the city, destroying everything in its path, the living, the dead, and the undead alike. And yet, protected by the impenetrable walls of the Tower of London, a handful of people have somehow survived. Now, they must strike out if they want to stay alive. They’re going to have to risk everything to get out of this hellish place, then risk it all again to reach Ledsey Cross, a fabled safe haven hundreds of miles away.