Batman or Bruce
Upon returning to the Batcave after the events of chapter three, Alfred will change the channel midway through a call you were having with Lucius Fox. A news report shows Harvey Dent making an announcement that the entirety of the Wayne Estate must be relinquished and handed over to the state within 24 hours so that it can be used for the good of the people of Gotham. Clearly losing his mind, you decide that you need to go and visit him, but as which of your alter egos will you choose?
Going as Batman will see the conversation initially looking like you might be able to sway Harvey, but after a while, he’ll snap and say Bruce was just another curveball the city threw his way. After he destroys the city block, he’ll make a comment on how he went over Gordon’s head to find the whereabouts of the drugs and that something has happened to him. You’ll hang him off the edge of the building and interrogate him to find out where his enforcers have taken Gordon. Dent will then be against you, even if you saved him in episode two. You’ll then head to Crime Alley to save Gordon and he’ll let you know that Dent already had the information before he got back to the precinct.
If you go as Bruce, you’ll have a conversation with Harvey, but your betrayal of him in episode three will lead him to still blow up the city block, continue the seizure of your assets, and then have his enforcers take you down to Crime Alley to kill you. Gordon will appear at the last minute and save you. After offering your thanks, you’ll disappear off.