Underworld Ascending — Perrin Briar

A sinkhole is a natural phenomenon. It can happen anywhere, anytime. It drinks lakes dry, consumes jungles, and even demolishes entire mountains. You may have seen one in your street. But these things aren't lost. They've simply been moved. Things are forgotten on the surface all the time. Beneath the crust, they're always remembered. A monster terrorizes a medieval town. The townspeople are being murdered. Dead bodies rise from hell. One member of town is responsible for it all. But who? SINK. A forgotten world. A lost world. But not for long.