Written by PAUL CORNELL Art and Cover by KENNETH ROCAFORT 1:10 Variant cover by DAN JURGENS We can't tell you much about this issue without ruining some of ACTION COMICS #900's surprises, but suffice it to say, Doomsday's back - and you've never seen him like this before! Doomsday's first appearance brought about the "Reign of the Supermen," where four characters - Superboy, Steel, Cyborg Superman, and Eradicator - came onto the scene to try to fill Superman's shoes. Now, with "Reign of Doomsday," it looks like Superman might need to fill their shoes! On sale MAY 25 32 pg, FC US RATED T