At 9.15pm on 9 April 1956, the BBC’s switchboard suddenly lit up with calls from hundreds of viewers convinced they had just witnessed a gruesome murder live on their television screens. A mysterious-looking oriental magician had put a 17-year-old girl in a trance, laid her on a table and sliced her body in half with a massive buzz saw as if she were a slab of meat on a butcher’s […]