All-Flash #2

"The Threat" -- Presenting, for the first time, a novel-length story of the Flash!  A novel devoted to telling the tale of how this faster-than-lightning speed demon was opposed by a man who was a master, not only of medicine but also of law and of science!  Known to the world as the Threat, he had gathered about him geniuses in their various arts of crime - second-story men, safe-crackers, robbers and murderers - with his gigantic organization.  He wielded tremendous power... until he ran across the Flash!