Pivotal early-1980s Legion of Super-Heroes stories, set just before the epic Great Darkness Saga, are now available in the first volume of an all-new collection! The greatest heroes of the 30th century star in these classic stories that set the stage for The Great Darkness Saga, one of the most beloved tales in Legion history! First, the Legion--including Mon-El, Brainiac 5, and Phantom Girl--takes on a Circus of Death! Then, the villainous Dagon strikes, kidnapping several Legionnaires' parents for ransom! And the Fatal Five return--now working for the Dark Man! Plus, in Secrets of the Legion of Super-Heroes, find out startling new information from the past of the Legion and their ally R.J. Brande! This volume collects Legion of Super-Heroes #260-271 and Secrets of the Legion of Super-Heroes #1-3.