Jethro Dumont is back as The Green Lama—the world’s first and foremost Buddhist superhero! The Green Lama investigates a series of strange accidents surrounding a traveling circus—which may be more than mere accidents, according to The Clown Who Laughed. Then he travels to a political convention in Chicago to tackle The Case of the Invisible Enemy. Will Fifth Columnists succeed in undermining and then overthrowing the United States government? Adapted from the October and December 1940 issues of Double Detective magazine by Kendell Foster Crossen writing as Richard Foster.