Tag #Police Errors

How did a seemingly ordinary real estate dispute escalate into a double murder, and what role did the perpetrator's obsessive surveillance play?

The murders stemmed from a dispute over hidden defects in a house Richard K. sold to the victims a year prior. His obsession escalated, using 15 cameras to monitor them, ultimately culminating in the killings which were largely recorded on video. The prosecution called the actions a "planned execution" and a "massacre.