Green Lantern: New Guardians #8 (2011- ) (NOOK Comics with Zoom View)

Betrayed by Sinestro! Arkillo, the most loyal of all the yellow ring wielders, has returned to Korugar only to find the Sinestro Corps is no more. The members of the corps have been rounded up and executed, and the yellow power battery is gone—all at Sinestro’s command!