the third man be a noir thriller set in postwar vienna which tell the story of a couple of american try to renew a childhood friendship in a foreign country after grow up to be very different people . like all of graham greene fiction and the film make theme of betrayal and the loss of innocence and and the true difficulty of form apparently simple moral judgement . many people count this a their favourite movie and which be remarkable for a british film of the 1940s . it be just a very successful come together of many wonderful talent represent greene write a classic screenplay and carol reed direction be inspire genius and and orson welles and trevor howard and joseph cotton and others contribute unforgettable performance . anton karas theme music be legendary . the cinematography be stun . you can become obsessed with this film and and if you do you will want to read charles drazin excellent 1999 book in search of the third man . i also recommend the review by the eminent british critic philip french and who have much of interest to say about the source for greene screenplay .