Superman/Batman, book 4 : Vengeance

Are Superman and Batman guilty of murder? The Maximums, a squad of super-heroes on the hunt for the murderer of one of their teammates, certainly think so - and where they come from, it's an eye for an eye! The battle of the century continues as the world's finest duo take on the super squad of avenging heroes - to the death!
(Collect : Superman/Batman #20-25)