Man allegedly poisoned 21 of his coworkers by putting chemicals in their lunches

The case of Klaus O.

It’s pretty common for someone to dislike a coworker. We can’t get along with everyone, after all. Unless you’re young, you have probably had a bad experience with a coworker. You might have experienced a coworker gossiping behind your back or trying to get you in trouble with your boss. But have you ever had a coworker try to poison you?

Klaus O. worked for a metal fitting company in Schloss Holte-Stukenbrock, Germany. He worked for…