Chet Ballard answers the pinpoint of light that from the craggy desolation of the moon stabs out man's old call for help.A signal is discovered on the Moon, leading to adventur, suspense, thrills, and an adventurous ride through space.Charles Willard Diffin was an engineer, airplane salesman and writer. He authored hundreds of science fiction stories many for pulp magazines during the 1930s and '40s.