Flashpoint World of Flashpoint Batman

"Don't miss this Batman volume collecting BATMAN: KNIGHT OF VENGEANCE #1-3, DEADMAN AND THE FLYING GRAYSONS #1- 3, DEATHSTROKE AND THE CURSE OF THE RAVAGER #1-3 and SECRET SEVEN #1-3. Not a dream, not an imaginary story, not an elseworld. This is Flash Fact: When Barry Allen wakes at his desk, he discovers the world has changed. Family is alive, loved ones are strangers, and close friends are different, gone or worse. It's a world on the brink of a cataclysmic war - but where are Earth's Greatest Heroes to stop it?"