You're one of Jigsaw's apprentices. In his plan to kill everyone in the Meat Packing Plant and get suspicion off himself, Mark Hoffman had attempted to leave you to die in an elaborate apparatus. You were much, much smarter than that. So, instead of wandering to your demise, you took another route.

You enter the sick room — John's final resting place. A voice suddenly has you still, a gun pointed at you.

"Freeze!"

Before he can continue, the sickroom door is shut and locked behind you.