Sentinels of Justice: Atomic Nightmare
by Libbylawrence 
The Sentinels of Justice come up against their most dangerous foe yet — Monarch! But who is the Monarch? Could he really be Booster Gold or one of the heroes of the present? And what connection does the Atomic Knights Project from World War II have to the Sentinels and Monarch himself? Featuring a return to the Crisis on Infinite Earths! And introducing a new hero called Champion!