"Readers nostalgic for the flash and dazzle of pulp derring-do will find this adventure tale a fitting homage."— Publishers Weekly
The strangest adventurers of all join forces against the dreaded Mysteriarchs of the Abyss — an ancient order of wizards or demigods with an insatiable appetite for destruction. Their goal: transform the "War to End All Wars" into the "War to End All But War!"
City after city falls before The Mysteriarchs of the Abyss, whose deadly arsenal of bullet proof-zeppelins and flesh-eating flies have made them masters of the air. In the hour of America’s greatest need, The Twilight Patrol arrives with a mystic rune offering salvation, but the country has dedicated itself to hunting down its saviors.
A strange manner of contagion -- the likes of which the world has never seen -- spreads across the Florida Everglades. Is this the result of chemical toxins driving back the bestial flies brought to America by the Central Powers? Or is it some new accursed pestilence provided by the Mysteriarchs of the Abyss ...?