Several people have suggested similar things.
Though I honestly think my suggestion of Kane going Batman on himself (There was an arc I read in a book where he ended up snapping and trying to kill himself, making it look like some new villain was after him, nearly killing Robin and Alfred in the process) would have been better.
And maybe it'll still happen. After all, we heard the voices in his head, maybe we also saw what he thought was Kane. Or MAYBE, it's just really good 3D.
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