Realtors answer: What's the most disturbing history you've learned about a house you were selling?

What started out as a 13-word question on Reddit, virally spiraled into unsettling, long responses from tons of users. Let me be the first to warn you, you’re about find yourself deep, deep, deep into a very disturbing comment thread. Serial murders, liquified human remains, and so much more. This story is NOT for the faint-hearted. You've been warned.