DC's official youtube channel has streamed the trailer for BATMAN: Three Jokers featuring a story line about the mystery of why are there three of Batman's greatest nemesis and the ones who's live where destroyed by Joker mainly Barbara Gordon/Batgirl and Jason Todd/Red Hood.

"Thirty years after Batman: The Killing Joke changed comics forever, Three Jokers reexamines the myth of who, or what, The Joker is and what is at the heart of his eternal battle with Batman. New York Times bestselling writer Geoff Johns and Jason Fabok, the writer/artist team that waged the “Darkseid War” in the pages of Justice League, reunite to tell the ultimate story of Batman and The Joker!"

BATMAN: Three Jokers is a Batman comics event written by Geoff Johns with art by Jason Fabok and colors by Brad Anderson and will run from August till October.