Action Comics #1056 DC Comics (2011)

A shocking new character makes their debut as the thrill-packed "Speeding Bullets" concludes!

Superman and Metallo must reluctantly join forces to stop the Cyborg Superman. With Tracy Corben's life (or at least her humanity) hanging in the balance, the Super-Family fights to keep Metropolis standing.

Meanwhile, Lois and the staff of the Daily Planet set out to uncover the mysterious leader--and shocking origin--of Blue Earth!