Green Lantern Corps, Volume 5: Uprising

"With the entire Corps under attack by the Khund and the shapeshifting Durlans, John Stewart must unravel the mystery behind destroyed Sector Houses. But as the situation becomes more dire, he and his rag tag group of Lanterns must seek out a Lantern that has been undercover for a very long time. Maybe even too long to be found. The beginning of this new GL epic begins here! Collects Green Lantern Corps #28-34, Green Lantern Corps Annual #2 and Green Lantern #31-33"--