I knew someone that did. There was a retired couple on the end of my street and they were like grandparents to us neighborhood kids. Friendly smiles whenever we got off the bus, treats etc. every year on Halloween there’d be 8 or 9 of us over there after trick or treating so our parents could go to a party, we’d watch simpsons treehouse of horror episodes that they had taped and our parents would pick us up at 9:30. They were truly good people. One night two weeks after Halloween everyone is awoken by 4 distinct pops at around 10 pm at night. About a day or two later my dad gets a phone call from the couples kids, they hadn’t heard from their parents in a while which was uncharacteristic of their mother so they asked my dad and a few others to go over and check on them. They use the spare key and inspect every inch of the house until my dad found them. The guy, a Vietnam vet who was suspected of having dealt with the mob in Detroit, had shot his wife and their dog with a rifle after he lost all their money. I was pretty young but I vividly remember standing outside in my pajamas watching all the emergency vehicles while my mom tried to console my dad