Batman/Superman. Volume 1. Who are the Secret Six

Batman. Superman. Alone, theyre two of the worlds finest superheroes. Together, theyre almost unstoppable.
Until now. Until the Batman Who Laughs.
Combining Bruce Waynes intelligence with the Jokers madness and the Dark Multiverses malevolent power, this warped version of the Caped Crusader has infected six heroes with his evil. Unless they are discovered and stopped, they will remake the whole world in their masters twisted image.
Now the search for the Secret Six is on, as the Dark Knight and the Man of Steel race to uncover the identities of the Batman Who Laughss chosen ones. But theyd better beware: the Infected include some of Earths most powerful beings...and some of Batman and Supermans closest friends.
Can Batman and Superman stop the Infected from spreading their sickness and destroying our world? Or will the Batman Who Laughs get the last laugh?