What, according to legendary movie director Martin Scorsese, was “the best revelation–or the best reveal, as they say–in all of cinema”?

Clue: the answer has Graham Greene all over it – as well as quite a lot of Orson Welles and Carol Reed and Robert Krasker.

The revelation/reveal is of coursethat Harry Lime (Orson Welles) Viennese doorway illumination moment from The Third Man(1949), directed by Carol Reed and based on an original treatment (and subsequent novella) by Graham Greene. Regarded as one of the greatest British movies of all time, The Third Man oozes film-noir gorgeousness. But without Greene’s story, cinematographer Krasker, director Reed and acting Titan Welles, cinematic geniuses all, would have had nothing to work with.