Batman/Superman (2013)

"The Dark Knight and the Man of Steel are close friends in the modern day--but the two weren't always such close allies. Discover how two of the World's Finest Super Heroes met for the first time in the New 52, and the mysterious adventure that takes them to a whole new world-the world of Earth 2! The heroes of the main DC Universe meet their Earth 2 counterparts for the first time! Collects Batman/Superman #1-4 and Justice League #23.1: Darkseid"--...

"The worlds of Batman and Superman come to an explosive clash as something terrible happens to the World's Finest team, and a Dark Knight who is not quite himself must team up with Lois Lane to find a missing Man of Steel. Meanwhile, Selina Kyle encounters a person of amazing strength who has no idea who he is. Writer Greg Pak (Hulk) re-teams with critically acclaimed illustrator Jae Lee (Inhumans) to launch this next epic chapter of the Dark Knight...