Alfred Hitchcock's Psycho, voted the scariest movie of all time, was supposed to be a comedy designed to make audiences "giggle with pleasure", a new collection of BBC interviews reveal. The film, widely regarded as the world's first 'slasher' movie, terrified and shocked cinemagoers when it opened in 1960. It contained unprecedented levels of violence and sexuality, and its infamous 'shower scene' — of a woman being brutally murdered — was later named the 'Best Death' in modern cinematography. But newly-unearthed interviews from the BBC archives shed fresh light upon the British director's real intentions.