True story. My parents lived in a terraced house in the 60s, the sort you could hear the neighbours' sneeze and mash the potatoes.
The neighbours on the right were out at work every day from 7am to 7pm, they both worked at the same place so my mother was used to hearing nothing at all from that side during the day.
Neighbours came home one evening and the house had been stripped, totally. Even the carpets and the huge old fashioned wardrobes had gone, we never could work out how they got them down the stairs.
My mother was at home all day and heard nothing, none of the neighbours saw anything.
The burglars did leave some blood on the wall but this was long before DNA. They were never caught. My neighbours were only renting and hadn't bothered to insure their possessions.