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Robert Mitchum's role was originally meant for Frank Sinatra, but Sinatra suddenly wanted several times more money than what the other male leads received, and the studio refused his demands. Gregory Peck was sought, but he was unavailable. The previous year, MacLaine had co-starred with Mitchum in "Two for the Seesaw", and she recommended him to director J. Lee Thompson who passed the endorsement on to the studio.