The 1955 film “Guys and Dolls” was the big screen adaptation of the hit Broadway play of the same name that starred Marlon Brando and Frank Sinatra as a pair of gamblers. While the story depicts their characters, Sky Masterson and Nathan Detroit, as friends, Stefan Kanfer's 2008 book, “Somebody: The Reckless Life and Remarkable Career of Marlon Brando,” details otherwise.