Orson Welles was born on May 6, 1915, and directed his most acclaimed film, Citizen Kane, at age 26. Years later, after a couple disastrous movies and a sojourn in Europe, he would reunite with one of its stars, Joseph Cotton, in The Third Man. Welles' character, Harry Lime, is the missing center of the movie until he appears, finally, and explains his motives for entering a less-than-savory line of work....