Long story short, Kai and Winter discovered that these were not actors in a haunted house, but individuals targeted and kidnapped by a crazy man who wanted to inflict punishment upon them for things he viewed as sins. Some of the punishments included mutilation, purposeful overdose, and even outright murder. Kai and Winter set all of these individuals free, and they finished it off by killing the man behind the Judgement House. This gave Kai his first experience with "justified killing," and all it left him with was a desire to do it more and more.