The house behind my parents has had a string of terrible tenants. Loud assholes, people who let their dogs run loose, people with unruly kids, etc.
Otherwise a pretty decent neighborhood.
There was a younger dude living there for a while, kept kind of weird hours, but my parents never thought much of that, figured he was going to school, working night shift somewhere, etc. Mostly kept to himself, never bothered my parents in any way, always dressed professionally, etc.
He was probably the best neighbor my parents ever had in that house.
Then one day cops raided the place, turns out he’d been dealing a lot of drugs out of there and had a punch bowl full of cocaine sitting out on the kitchen counter.
Some of the other neighbors apparently had noticed some pretty sketchy characters coming and going from the house, they must have entered from the front door though, because my parents never really noticed anyone.
My parents would still take the drug dealer over pretty much anyone else that’s lived there.