I know he's telling the truth because I saw something that wasn't human behind blinds in a rental I was showing. It was really tall and gray with long legs. Whatever it was was able to disappear but it emanated really evil energy and for some reason it liked natural gas that came from the stove because the house was filled with natural gas fumes. My client and I got out of there so fast. We never told anyone because we both thought we were going crazy. Now I know we weren't.