Ultimate Corruption — David Peters

The story continues for Dylan and Niccole Murphy as they fight to carve out a life in the small community of Paradise Falls and continue the defense against the neighboring threat known as the Corrupted. The evil growing in the nearby town has also begun their next phase of life and continue their attempts to become the dominant life form of the world. But for Paradise Falls, not all enemies come from outside the walls of the small fortress town.

This is the second book in the End World series and is 68,000 words long.