Batman: Hush

This is yet another storyline which would work very well as a mystery movie rather than an action one. Sure enough, the comic book features quite a few villains from Batman's rogue gallery. But this is where the magic starts: Hush is the one that pits them all against the Caped Crusader.

With hints of horror, this kind of adaptation would see the Batman facing off an opponent that knows his own identity. Maybe Hush was the one to force the Dark Knight into seclusion from the first place?