A few years ago, I tried a web search to try to find one of my co-students at college.
I eventually found out that he was sentenced to life imprisonment for murder about 10 years ago. He had always been a bad-tempered and stroppy guy (but I didn't care, 'cause he was a buddy and by definition "on my side"). I'd never expected him to turn into a murderer though.
The odd thing was that his was a retaliatory attack, against someone who had attacked him a few months before.