I look at abandoned and foreclosed homes as part of my job. I have walked through about 2,500 in the past years. The time I got scared the most was when one house was in rough shape. It had been ransacked and had lots of debris, even though the windows were boarded up. I got in and was taking photos of all the rooms.
As I made my way to the dimly-lit basement, I turned the corner and saw a man standing in the back, looking back at me. I yelled in fear and jumped back, only to realize it was a floor-to-ceiling mirror and a reflection of myself. AustynCunningham / Reddit