How do you find the killer of the commissioner in Batman Arkham Asylum?

Answer 1

first the commissioner being killed is only an illusion second go to the left of the hall and yull be in the morgue go back through the door to be back in the morgue (another illusion) there will be three bags that hold bodies, open them. the first one youll open is bruces father the second will be his mother the third will be Scarecrow, a scary batman villian, and hell freak you out.. with all of them open turn around and youll be in yet another illusion simply jump onto the gap and youll come across Scarecrow again but now a threat. youll also notice his gaze the bright light shining from his eyes avoid the gaze as it will get you killed you can avoid the gaze by hiding behinf walls or other objects youll have to keep going until you come across a spotlight come closer to it and press the run/action button and Scarecrow will be knocked out. (youll come acrooss him two more times. the third one is obviusly weird)