Dude not cool, My friend house mite be haunted?

THIS HAPPPEND TODAY. I'm watching family guy at his house and hes sister is sleeping on the floor. It's was F**king hot in hes room so I cranked open hes window and while doing that. I looked out at the window to the house that's like bordered somewhat nearby hes home I caught a glimpse what seems to be a mist like figure that reassembled a face for like 2 seconds that thing disappeared. I wasn't startled I had a weird feeling it wanted to contact me for help WtF?!?!