Heavy Rain/Origami Killer

From StrategyWiki, the video game walkthrough and strategy guide wiki

In this chapter, you finally learn who the Origami Killer is, if you didn't catch the clue in the previous chapter. All you have to do is get rid of the evidence on the desk by burning it in a wastebin. As you burn the evidence, you'll get to see some flashbacks in the killer's memory.

If Madison is alive, you'll go on to Killer's Place, otherwise you'll go straight the last chapter, The Old Warehouse.