The official summary reads:
The critically acclaimed series by master storytellers Geoff Johns and Gary Frank reaches its most shocking chapter yet when the DC Universe collides with its greatest threat: Dr. Manhattan. But nothing is hidden from Manhattan, and the secrets of the past, present and future will rock the very foundation of the DC Universe.
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About Doomsday Clock #9
The critically acclaimed series by master storytellers Geoff Johns and Gary Frank reaches its most shocking chapter yet when the DC Universe collides with its greatest threat: Doctor Manhattan. But nothing is hidden from Manhattan, and the secrets of the past, present and future will rock the very foundation of the DC Universe.
MAJOR SPOILER ACCLAIMS BEYOND THIS LINE
The following article contains major spoilers for Doomsday Clock #9 by Geoff Johns and Gary Frank, on sale now.
NO ALAN SCOTT ALSO MEANS NO JSA
Alan Scott became Green Lantern by taking hold of the lantern that gave him his powers and saved his life in the immediate aftermath of a train wreck. In Rebirth, Doctor Manhattan’s cold, calculating maneuver simply moved that lantern inches from Scott’s grasp, so instead he simply died in that accident along with the other victims aboard. This meant no Justice Society, but that wasn’t the end of the ripple effect.
The spiritual successor to the Justice Society, the Justice League, came together just fine in Rebirth, so it might appear that any kind of butterfly effect stemming from Alan Scott’s death ended there. But there’s another startling revelation made by Doc Manhattan relating to his manipulation of Scott’s intended fate. That revelation is that Scott’s death also directly impacted the formation of another super team centuries later, the Legion of Super-Heroes.
In Doomsday Clock #9, Manhattan snags a familiar artifact floating through space: a Legion of Super-Heroes flight ring. The ring is dripping with blood. That blood is revealed to belong to the Legion’s first member to give his life on a mission, Ferro Lad. Ferro Lad, of course, sacrificed himself to defeat the Sun Eater back in Jim Shooter and Curt Swan’s Legion story in Adventure Comics #353, over half a century ago.
The explosion that killed Ferro Lad, however, apparently spared his ring, according to Manhattan’s observations. That same explosion somehow caused his ring to cascade back through time and into Doc’s hands. However, when Manhattan acknowledges his interference with Alan Scott’s fate, a curious side effect occurs. Ferro Lad’s ring disappears from his hand.
The reference directly ties the original Green Lantern’s fate with that of not only Ferro Lad’s, but the entire Legion of Super-Heroes, or lack thereof. And not only the entire Legion, but also everything in between.