in the interogation room, knowing that he would not kill him. that's why the joker dares to stand in front of the motor cycle & not afraid of being run over. he even asks batman explicitly to break his rule & says that he himself has no rules & no plans.
2) the joker wants the boat people to trigger the detonator, and when this didn't occur, he took out another set of detonator, but batman stopped him in the process.
3) 2 rat from the police force, both have relatives in the hospital that got blown up. one of which is a guy, identified by gordon in the police car, after he got a text message from batman. the other is the female assistant, who was killed by harvey. she made it clear that it's because of the mounting hospital bills.
2) the joker wants the boat people to trigger the detonator, and when this didn't occur, he took out another set of detonator, but batman stopped him in the process.
3) 2 rat from the police force, both have relatives in the hospital that got blown up. one of which is a guy, identified by gordon in the police car, after he got a text message from batman. the other is the female assistant, who was killed by harvey. she made it clear that it's because of the mounting hospital bills.