I employed a cleaner who at the time I thought was weird. She would say that our city's bridge was green as a beakon for alien space ships etc etc.
Anyway, we put her into a retail shop, 1500 sq feet downstairs, front staircase to a similar size first floor sales area. There was a rear staircase down to a basement area where our cupboard and a staff room was. Her job was to sweep and buff both sales floors and mop the stairs, clean a single toilet, the staff room and empty the bins.
I visited the shop fairly regularly and the staff there always said how strange she was, she'd sit in the dark in the cupboard after her shift etc before going home. The thing that drove the staff mad was that she'd always insist that to get from the basement to the first floor they should walk up the direct staircase which was behind the cleaning cupboards wall!! It was just a big wall, been put up 50+ years ago, no sign of door ways etc. The staff thought she was mad.
Well, I had to have a word with her as the staff were by now getting sick with her telling them they were wasting their lives running to the front of the store to go upstairs when the other staircase was quicker. She took the huff with me, resigned and left.
A year or so later we lost the cleaning at the store as it was bought out by another company. It was completely refurbished. By co incidence, I was in there with my wife, shopping and the Manager came over to say hello. She asked if I'd seen anything of Kath the cleaner, I replied no. Then she told me the story of the refurbishment. They had got the plans off the council dated back 80 years as they had to move some internal walls and on the plans was a direct staircase from the cleaning cupboard to the first floor
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When the plans were shown to the manager and her assistants at the shop shesaid that they all went completely silent and looked at each other. All of them got goosebumps on their skin from a cold that didn't exist. Weird, eh.