Doomsday clock

"Dr. Manhattan--a near-omnipotent being from the world of Watchmen--has taken an interest in the DC Universe. For years, he's been rewriting histories, changing heroes' fates, but why? He abandoned his own world to meddle in this one, without a hint of an explanation. Now Ozymandias, the Comedian, and a new Rorschach have all followed his trail to Gotham City. With the pieces all on the board, it's Dr. Manhattan's move. Only one force in the DC Universe could possibly stand against the man who was once Jon Osterman. But when the two titans face off, will Superman destroy Dr. Manhattan, or will Dr. Manhattan destroy everything?"--Back cover.