I wonder if it was among the first TV serials to use 'electronic' music? I think it was produced by synthesisers, quite a new thing for those times. Quatermass was excellent but very, very scary. I bet if we watched it now we'd fall off the sofa laughing, not hide behind it. How tender we were then. Nowadays, children are hard as nails and watch all kinds of strong stuff without turning a hair! By the way (thread drift) does anyone remember The Trollenberg Terror? The Thing turned out to be a rubbery-looking creature rather similar to the Loch Ness monster, and it came into a house, whereupon I fled the TV room!