Blood Sacrifice. The Ancient Blood series., #2

The seal is broken. Now, the machine is hungry. They thought the nightmare ended in the Syrian desert. They were wrong. The horror that began at the ancient Temple of Moloch has found a new, industrial pulse. In the frozen, desolate wastes of the Arctic, the Abadi Group has reopened the Kola Superdeep Borehole-a Soviet-era relic that pierced the crust of the earth and touched the void. But they aren't drilling for oil or rare minerals.
They are harvesting the raw, liquid essence of Hell itself. Mohammed Abadi, the last and most ruthless of the Abadi brothers, has turned the borehole into a factory. He is pumping the "void vapor" into the veins of dead soldiers, creating the Vanguard-an army of unkillable, unthinking biological machines that know no pain, no fatigue, and no mercy. Father Richard Blood, the scholar-priest who once shattered the Canaanite altar, is a man haunted by the past and broken by his scars.
But as the temperature in the Arctic tundra plummets and the screams of the deep earth begin to echo across the globe, Richard knows his crusade isn't over. With Joseph, the Mossad ghost, at his side, Richard must infiltrate the heart of the Borehole facility. They are walking into a meat grinder where the lines between biology and technology, between the living and the dead, have been violently erased.
As the permafrost melts and the ancient serpent begins to rise from its subterranean cage, Richard realizes the terrifying truth: the Borehole wasn't just a door. It was a fuel tank. And the world is about to be consumed by the fire. Survival has a cost. And the bill is coming due. BLOOD SACRIFICE The Ancient Blood Series, Book Two By Bruce Savage