While staying at a cave hotel in Cappadocia Turkey (caves where people lived to escape religious persecution almost 2000 years ago) I had very odd sensation that there were people in the (pitch black -- not a speck of light) room during the night. I woke up the next morning completely turned around in the bed (head at the foot of the bed) which has never happened to me in my entire life. A small thing, yes, but it disturbed me for some reason.