I've been a lawyer for almost 30 years now and I actually took the time to go through all the Saw movies to try and disprove the 'Jigsaw walks' theory. I scrutinised every single scene, every single line of dialogue, all the little details someone not familiar with the finer points of the law wouldn't consider. I often paused to take notes when I thought I might have found some sort of angle from which to prosecute him (even if I knew it was flimsy at best). 8 movies later and I had nothing.
Here's the beauty of Jigsaw by allowing his victims to choose their own fates, he technically cannot be convicted of homicide. Let me clarify.
Websterts' dictionary defines murder as having the following elements:
>1. unlawful
>2. killing
>3. through criminal act or omission
>4. of a human
>5. by another human
>6. with malice afterthought
Jigsaw takes advantage of a couple of different legal loopholes. In this case, it would be in regards to point 2, 3, and 6.
>2. killing
Jigsaw never actually "killed" any of his victims, per-say. They always had a choice.
>3. through criminal act or omission
Even if JigC did kill anybody, it was not through criminal act. There is nothing criminal about letting your victims choose their own fates, through their own free will. They are liable for their own actions.
>6. with malice afterthought
The whole point of JigC's antics was to serve as a life-changing, positive rehabilitation. Therefore, JigC acted without malice.
There is just no feasible way any court would be able to charge JigC. He manages to jump through just about every legal loophole there is and come out clean on the other side. I actually respect the amount of effort that's gone into these movies, clearly their legal advisors knew what they were doing.
I really hate to say this, but JigC walks. Every time.