We’re seeing a closed demo of Heavy Rain: Origami Killer at Games Convention. Quantic’s David Cage is walking us through a huge part of the game that continues on from and includes scenes from yesterday’s video demonstration.

First Cage has told us that you only control the head and shoulders on the character, you just press a button to move forwards.
The main character is investigating a series of disappearances and is going to the house of a taxidermist - hence the birds hanging in the ceiling in the video footage.
Everything in the game is context sensitive, we are told.