In 4 for Texas, Frank Sinatra and Dean Martin star as Zack Thomas and Joe Jarrett, a pair of rival mountebanks who spend most of the film battling over who will control the gambling and wenching in 1870 Galveston. Though they'd as soon cut each other's throats than cooperate, Zack and Joe are forced to unite against a pair of common enemies: crooked banker Harvey Burden (played by Victor Buono, a favorite of director Robert Aldrich) and cold-blooded outlaw/hired-gun Matson (Charles Bronson, virtually the only person in the film who takes his role seriously). The heroes also battle over the affections of well-endowed heroines Elya Carlson (Anita Ekberg) and Maxine Richter (Ursula Andress), both of whom are sharp-witted businesswomen who match Zack and Joe scam for scam. The Three Stooges show up for a moment, in which they repeat their "point to the right" and "State of Texas" routines, and get into a fracas with feisty little old lady Jesslyn Fax. Also making guest appearances are Arthur Godfrey and Teddy Buckner and His All Stars.
by Hal Erickson synopsis