His dastardly plan was to kill the parade-goers with lethal green Smylex gas from one of the giant balloons, joking: "If you gotta go, go with a smile.")Disharmony and tragedy in the poetic film""s conclusion arise because of the conflict between the male protagonists in a fatal, fiery love triangle, who both demand the exclusive love of a female.Directed by the talented Hungarian-accented Michael Curtiz and shot almost entirely on studio sets, the film moves quickly hrough a surprisingly tightly constructed plot, even though the script was written from day to day as the filming progressed and no one knew how the film would end - who would use the two exit visas? [Would Ilsa, Rick""s lover from a past romance in Paris, depart with him or leave with her husband Victor, the leader of the underground resistance movement?] And three weeks after shooting ended, producer Hal Wallis contributed the film""s famous final line - delivered on a fog-shrouded runway.Lecter was forced to be recorded during a deposition - recounting his recollections of his brutal wartime capture by the six deserters and Mischa""s death.On he building""s roof, he used the two-way CB radio (on a reserved channel) to send out a "May-Day" alert about the terrorist ake-over, and although he was not taken seriously, a black-and-white "drive-by" was ordered.