Green Lantern (2005-2011) #45

The Black Lanterns descend on members of the Corps throughout the universe! Sinestro's assault on the Star Sapphires' homeworld of Zamaron is interrupted by another Sinestro Corps—one made up of those who died during the Sinestro Corps War! And while the War of Light flickers, deep in the darkness of space, John Stewart comes face-to-face with his deceased wife—and longtime Green Lantern—Katma Tui.