I had a doppelganger of my fiancee at the time lead me across the house.
I was in the kitchen cooking when she walked out of the front room and as she was passing me started stripping off her top and pants. I followed behind her in the hallway and she was in her underwear by then (in retrospect, the clothes it discarded weren't on the floor) and rounded the corner into our bedroom out of my line of sight. 5 seconds later when I enter the room it's empty. I immediately call out to my girl and she's been in the bathroom taking a shit for the previous 10 minutes.
A lot of fucked up and some unexplained shit happened that week but that one always gives me chills thinking about.