These days the term “doppelgänger” is used to describe two different people who look unusually alike. The internet practically abounds with photos of identical-looking celebrities, people who’ve discovered their so-called doppelgänger in old artworks, and complete strangers who look like they could be long-lost twins. It’s actually eerie how closely most of these people resemble each other. But the original meaning of “doppelgänger” is even eerier.

Finding pentagrams carved into your concrete patio is not exactly a warm welcome to your new house… but that’s exactly what our interview guests on Episode 115: The Satanic Slaughterhouse discovered in their home! And they aren’t alone in their creepy finds. The Internet is full of photos of weird things left behind by former homeowners, usually uncovered by unsuspecting and mystified new residents. Here are just 10 creepy things people found in their homes: