My story is really tame by comparison:
I knew a guy I will call Steve that was a little less than quick. He was a friend of a friend and I had only ever seen him at my friend's house. I had no idea where he lived.
So my friend moves out of town and I don't see Steve any more after that and a couple years later I move into a different area of town. I've lived in my house a year or two and decide to take a trip over the weekend. Leave Friday night, come back Sunday evening in time to rest before work. The cats have food and water and the neighbors are going to check in on them Sat and Sun morning.
I get home Sunday evening and it's raining and storming and windy and I am looking forward to a quiet evening. I walk into the house and realize that the curtains are down and one of the windows is broken, with glass all over the floor. The rain and wind is entering the house.
I see a brick on the couch. As I get closer I see a piece of paper under the brick. It is burned into my memory:
Hi - was walking one day and saw you come out of this house. Needed a place to stay and knew you wouldn't mind if I crashed a couple days. You didn't answer the door so I came in the window. Thanks - Steve.
Luckily for Steve, he had put the cats into the bedroom and shut the door. Unfortunately he had not bothered to put their food, water and litter in there as well. Poor cats, they seemed mortified about what they had had to do while trapped.
As you can guess, my neighbors had taken the money I had paid them for cat-sitting and hadn't bothered to check on them at all. None of these people were ever invited back, although I am sure if Steve had needed a place to crash again it wouldn't have bothered him.