It would be a better story if he got away with it. The biggest mistake people make is thinking the law exists to protect them.

No one looks hard for missing scumbags. No reason to go to jail for doing what the law should have done. If you actually do take revenge publicly with witnesses they basically have no choice but to put you in jail. But some dbag vanishes and no one immediately admits to it? Cops call it a suicide and go back to the donut shop.

CSI is the biggest fucking joke. No one is spending millions of dollars to hire supermodel agents to find murderers. Reality is The Wire--dimwitted lazy assholes who don't give a shit. Don't give them a reason to find the bodies and they won't.