Underland
The paranormal branch of the National Security Agency enlists the aid of Victor Requist, master of the Nosferatu colony, along with NSA operative Jack Coulson, and Thyme Bridewell, a failed NSA brain-control experiment, to seek out survivors of Hitler's Third Reich, who have set up a secret base in Antarctica with the their allies, the Dhrakuh, an ancient race of sentient reptiles. Reprint.