The Pulp Era's strangest mystery man returns in two more epic adventures by Paul Ernst writing as "Kenneth Robeson." First, can Justice, Inc. prevent secrets of an ancient civilization buried for centuries in The River of Ice from destroying the modern world? Then, scientists in Paris, Berlin and Montreal exhale fire as they die, setting The Avenger on the trail of The Flame Breathers and a deadly secret that threatens to plunge the world into a fiery infernal! BONUS: a thrilling adventure of Police Commissioner James Gordon, a.k.a. The Whisperer! This classic pulp reprint showcases H. W. Scott's classic pulp covers, all the original interior illustrations by Paul Orban, and historical commentary by Will Murray.