A window is thrown open and sudden light illuminates the face of Orson Welles. Harry Lime's returban from the dead in 'The Third Man' (1949), Carol Reed's unique thriller set in occupied Vienna, is one of the most famous scenes in all cinema. But there is more besides: the zither score, the tilted shots, the cuckoo-clock speech, the desperate manhunt in the city sewers. A British-American co-production overseen by Alexander Korda and David O. Selznick, 'The Third Man' was written by Graham Greene, photographed by Robert Krasker and featured, along with Welles, Joseph Cotten, Alida Valli and Trevor Howard. All of the did superb work under Reed's subtle direction. After 'The Third Man', Carol Reed was hailed as one of the world's great directors. This title sets out to understand what kind of artist Reed was and whether he deserved such accolades. Rob White explores how the film came to be made and seeks to explain its fascination.