WRITTEN BY MARK SCHULTZ; ART BY YVEL GUICHET AND DEXTER VINES; COVER BY JOHN CASSADAY The conclusion to "Gangs of Metropolis!" The Overmind is revealed as Superman makes a sacrifice. Meanwhile, John Henry deals with Natasha's shocking transformation, and the final fate of the B13 technology is revealed! FC, 32 PG. $2.25 Cover price $2.25.