Justice Society of America: 1949: The Science of Revenge
by Libbylawrence 
What is the secret behind the sudden appearance of a group of new and seemingly all-powerful super-villains? The Justice Society of America must track down the answer before their colorful new foes can succeed in their plan to kill a group of scientists! Could Rex Tyler, the long-retired mystery-man Hourman, provide inside information for his former partners to crack the case in time? Guest starring Mister Terrific!