I thought the point of TwoFace is he was a great man before Rachel's death, but losing Rachel drove him insane. But the scene where he interrogates Schiff seems to suggest he was a psycho all along, and makes it difficult to sympathize with him.
shareI think it was meant to show Dent was kinda losing it already. The pressure from Joker trying to kill him, getting shot at, the cops being corrupt. And now a threat to Rachael really kinda pressed his nerves.
shareThat reminds me of the earlier dinner scene where Harvey praised Batman's vigilantism, rather than taking the expected legalistic stance. Perhaps Dent's crusading attorney persona was always a mask, just like Bruce Wayne's millionaire playboy persona had become for Batman?
shareIt foreshadowed the Joker's plan to break a good man and drive him insane by hurting the people that he loved. When he saw Rachel's name he was able to put aside his morals to save the love of his life. That's what Batman tried to explain to Dent, that if people knew that they would lose their faith that Harvey was an uncompromising savior.
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