Hellstone
Everything goes black. Gabe finds himself back in Doug's body, but this time he's the frat apartment, tied to a chair with rope. They question him, but Gabe honestly has no idea what's going on. Connecting the dots between all of the yelling, Gabe discovers that Dan's body suddenly disappeared, and now anyone who touches the stone gets trapped inside of it, and the person who was trapped inside of it ends up in the body of the person who touched it. Once they determine than Gabe is useless, they force him to touch the stone.