Scott Shelby Epilogue
Heavy Rain Walkthrough and Guide
by CMBF 
Scott Shelby Epilogue
Chapter 68: Epilogue - A Mother's Revenge
Lauren gets even
Lauren figures out that Scott is the Origami Killer and executes him.
To unlock this Epilogue Lauren must not die, and during the conveyor belt battle Scott must win.
Chapter 69: Epilogue - Origami's Grave
Lauren is seen standing over Scott's grave - she tells him how she feels about him and spits on his grave!
To unlock this Epilogue simply play through the walkthrough as written. Basically Scott needs to survive to the end and then be killed by Norman in the conveyor belt battle.
Chapter 70: Epilogue - Unpunished
Having managed to destroy all of the evidence and not be unmasked as the killer, Scott gets away with it.
To unlock this Epilogue Lauren must die, Scott must recover all of the evidence and wipe away all of the fingerprints at Manfred's, and the other characters must fail/die at the end.
More Heavy Rain
Oh, that is interesting. I didn't get any of these epilogues for Scott. In my game, Lauren didn't survive (I don't think the origami killer would save her anyway) and neither did Norman(Mad Jack was terrifying), so Madison killed Scott and there was no one at his grave to spit on it at the end. It just showed a shot of his grave and moved on to the next epilogue.
1