It's easy to mock when you've never experienced this sort of thing Once plumbers have checked the pipes and central heating system, carpenters have checked the floorboards and door and window fittings, surveyors have checked the structure of a house, and still things happen, it really isn't funny, and it takes a restricted mind to dismiss other possibilities when there is no logical explanation. When your front door, of its own accord, opens wide and then slams shut, and you hear someone running up the hall and clattering up the stairs, apparently in hobnail boots, the central heating it's not! Incidentally, who should I have called to check why clocks and watches, be they electrical, battery or clockwork, were all regularly set back an hour on the same night? A plumber, a carpenter, a surveyor? I think not!