Green Lantern #21,
VERY FINE/NEAR MINT
Written by Geoff Johns
Art and cover by Ivan Reis & Oclair Albert
Variant cover by Andy Kubert
The first chapter of “Sinestro Corps” explodes! Sinestro's army of fear has gathered: Arkillo! Karu-Sil! The Cyborg-Superman! And hundreds more of the most terrifying villains the universe has ever seen!
Hal Jordan has overcome great fear throughout his life, but what fear still lingers inside him? Parallax knows, and Hal's about to be reminded as he leads Earth's Green Lanterns on a life-or-death rescue mission in the middle of this war. Meanwhile, the Guardians of the Universe find dissent within their ranks as a bizarre prophecy is fulfilled.
The secrets of the Green Lantern Corps and its power are about to be revealed!