Batman: Under The Red Hood (2010)

A figure from the Dark Knight's past unexpectedly returns, forcing him to revisit the most tragic event of his crime-fighting career. A twisted, disfigured character known as the Black Mask has seized control of Gotham City's criminal underworld, but his supremacy is undermined by the arrival of the mysterious Red Hood. As the violence escalates and the truth unfolds, the Caped Crusader soon comes to the painful, shocking realization as to whose face is really under the hood.