Hey, i got this feeling this "missing" backstory its going to be the Saw thingy thing, cuz based on the facts at least on the 1st film most of jigsaw'a victims were in their underwear in the games, and a report says they found some bloody tuxedos. Second there is the sewerage and in Saw (1) Adam & dr, gordon were in the sewerage ( you can see it when the detective runs after Zepp) and of course the old rusty wrench is a metaql tool just like almost everytrap in saw......
Guess being a saw fan was rewarding after all....
Wadja think?
oh and the boys were "bad people" too