This is the back of that house. It was here on a cold winter night that dad heard the unmistakable sound of footsteps crunching in the snow on the porch, and the doorknob rattle as if someone was trying to get in the house in the middle of the night. He checked, only to find no footprints.
Mom had the experience mentioned in a much earlier post where she was home during the day and the doorknobs, front and back, alternated with rattling. Earlier posts will give you more info.