Michael Keaton returns as Batman in first look at 'The Flash' movie with Ezra Miller - USA TODAY

CinemaCon attendees got the first look at Michael Keaton's return as Batman in Ezra Miller's "The Flash," uttering a famous line in new footage.

LAS VEGAS – The Bat is back.  Thirty years after he last donned the cape and cowl in 1992's "Batman Returns," Michael Keaton is suiting back up as the Dark Knight in "The Flash" (in theaters June 23… [+2627 chars]

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