You're welcome. I forgot the mention the whole thing regarding "Based on True Events" BS, according to wikipedia the director based this on a childhood event. He stayed at a remote house for vacation once. Months later he heard it had gotten broken into. Bam, there's your story.

It's also influenced by one of the Manson deaths, very loosely. I guess anyone can say their movie is based on real events. The Incredible Hulk, based on true events:
"I was at the gym once, and I saw this really buff dude. He dropped a weight on his foot and got really angry so he started throwing stuff around. Thus, The Hulk was born"