A Dangerous Warning
This guy and a group of friends squatted in abandoned homes. They found one place that was known as a dealer’s den, but nobody had conducted business there for quite a while. So, they thought it was safe enough to crash for a bit. That was a terrible, terrible decision.
The first night there, they heard knocking on the front door but left it unanswered. The next day, they discovered a huge knife on the front door, as if the person who came the night before intended to do harm to the OP and his friends. Needless to say, the group didn’t stay there for very long.