When events bring the Vatican's top monster hunter, Thomas Smith face to face with Agent Heather Dahan, Homeland Security's Special Investigations Department things go from bad to worse.

First, Heather Dahan is the spitting image of Thomas' long-dead wife, and second, she just witnessed him kill a Nagyr, one of the many servants of Yig, a Great Old One and the being behind the death of Siduri, Thomas' deceased wife.

Fearing that Yig is attempting to make another attempt at crossing over into our world, Thomas must decide whether he can trust Heather by telling her his many secrets.

All the while trying to stop Yig and her Snake Cult from accomplishing what they attempted many years before.

The results last time cost Thomas, his wife.

What will it cost him this time?

Born to the High Priestess of Inanna in a land only archeologists remember.

I've been called Sorcerer, Apostle, Saint, Crusader, and Spiritwalker.

I have witnessed the rise and fall of empires.

I am the Sentinel.