eBook edition. By buying this, you’ll be downloading a .zip file containing both an .epub (for Nook and Apple devices) and .mobi (for Kindle devices) eBook of this title.

There are unknown Things prowling the darkest patch of land on the planet. Haunted by creatures that might have emerged from the Hell’s lowest regions, ancient Ultra-Stygia has turned into a cauldron of conflict between rival countries. Monster bats careen through the night sky. Invisible Cyclopes patrol the scorched battleground. And a power beyond understanding robs men of their vision.

Can the 20th century’s premier scientist and superman untangle this Gordian knot of carnage before neighboring nations are drawn into an apocalyptic new world war? Or will the Man of Bronze succumb to an unstoppable power he himself has unleashed upon mankind?

From the frozen Arctic to the war-torn Balkans, Doc Savage and his fighting five follow a winding trail of terror to a blood-freezing climax.