In this week’s issue of HAL JORDAN AND THE GREEN LANTERN CORPS, John Stewart and Hal Jordan need the help of the Sinestro Corps to save the universe from an unidentified threat.

Meanwhile, Sarko has located a crucial source of the Corps power. Will Hal and the Green Lantern Corp be able to stop Sarko from destroying everything? Find out more in HAL JORDAN AND THE GREEN LANTERN CORPS #20, from writer Robert Vanditti, and artists Rafa Sandoval, Jordi Taragona, Tomeu Morey (colors), and Dave Sharpe (letters)!