Christopher Isherwood gives fascinating insight into pre-war Berlin. MR NORRIS CHANGES TRAINS The first of Christopher Isherwood's classic 'Berlin ' novels, this portrays the encounter and growing friendship between young William Bradshaw and the urbane and mildly sinister Mr Norris. Piquant, witty and oblique, it vividly evokes the atmosphere of pre-war Berlin, and forcefully conveys an ironic political parable. GOODBYE TO BERLIN The inspiration for the film Cabaret and for the play I Am a Camera, this novel remains one of the most powerful of the century, a haunting evocation of the gathering storm of the Nazi terror. Told in a series of wry, detached and impressionistic vignettes,