Michael Powell and Emeric Pressburger's 1947 masterpiece Black Narcissus was probably the most revolutionary, innovative and daring film of the period (certainly of British films) and still stands up well today. When the Archers (the name under which P&P made their films) raised the proposed subject matter of the film (a group of nuns, sexual repression, murder, etc) with Arthur Rank, who had his hands on the purse strings at the time, he was understandably nervous, but largely due to Powell's characteristic determination, thankfully the film got made.
Black Narcissus' story centres on a group of Anglican nuns, led by Sister Superior Clodagh (superbly played by Deborah Kerr), who are sent to a remote part of the Himalayas to establish a school and hospital for the benefit of the local population. Their objectives are undermined by a combination of factors, including the reluctance of the local British agent Mr Dean (David Farrar) to support them and the increasingly eccentric behaviour from the mentally unstable Sister Ruth (played by Kathleen Byron, in a film-stealing performance).
Black Narcissus was way ahead of its time in many elements. The most notable is undoubtedly the way in which the film creates a brooding, and increasing, atmosphere of sexual tension between the three main characters, Sisters Clodagh and Ruth and Mr Dean, as the latter parades through the nuns' living quarters (ironically a converted harem!) in shorts and bare, hairy legs. Visually, the film is also uniquely stunning. With Oscar-winning cinematography by Jack Cardiff and art direction by Alfred Junge, incredibly the film was shot primarily at Pinewood Studios, with some exterior shots being filmed at Leonardslee Gardens in West Sussex, home to an Indian army retiree who maintained an array of authentic Indian flora. The quality of the interior set design was so high that, after the film's release, the film-makers were contacted by various people claiming to recognise actual Indian locations!
The film builds tension throughout and concludes in one of the most brilliant, and thrilling, closing 20 minute sequences in cinema history, as Sister Ruth's jealousy of Sister Clodagh boils over into a violent climax with tragic consequences. There is an excellent set of DVD extras which include interviews with both Jack Cardiff and Kathleen Byron, in which Byron describes how she was shocked to see in this final film sequence the effect Cardiff had achieved in making her appear totally deranged!
Another reason why there may have been abnormally high levels of tension on the film set was that Michael Powell was directing both his current lover (Byron) and his previous one (Kerr). I presume he kept his wife off the set at all times!
A magical film, which (as with all P&P films) gets better and better with repeat viewings.