At the preview of American Psycho at the Almeida Theatre I caught last week, the audio wasn't great, the cast seemed uneasy and props were knocked over. At one point a dancer blinded by the projections seemed to fall off the stage. But there was something about this slick, thoughtful and funny production that suggests that these are mere early days for a show that has all the makings of becoming a great new musical. The first half is too long and it could do with some more gore, but you will walk away amazed by the spectacle, style, music and performances. American Psycho is based on the book by Brett Easton Ellis . Famous for its graphic violence and sexual content, it tells the story of Wall Street investment banker who details his life from drug-fuelled clubbing with colleagues, to obsessions over business card fonts and forays into mass murder. He is in a loveless relationship with a fellow yuppie and violent murders seem to be his release, whether they are real or i...