Shocking stories about people you know/knew?

I don’t want to steal @LornaLoves thunder, so I’ll try to give my question a little distance.

Our favorite waiter at our favorite Mexican restaurant murdered his ex-girlfriend and her lover. He was perhaps the best waiter I ever knew.

‘The girl next door’ to our business once worked for us, cleaning tables and chairs. Not long after she got out of prison from the ‘cooking meth in a hotel room’ sentence, she helped murder someone.

One of my HS classmates/friends held himself hostage (said he would kill himself) in a house I would later occupy. His father would end up my neighbor when I bought my first house. Sanctimonious wife abuser. Probably kids, too.