So a renowned explorer ("Capt. Spaulding" - Groucho Marx) returns from doing his David Livingstone in Africa and attends a lavish reception in his honour. Whilst at this swanky soirée, a very valuable painting is stolen and so he, along with Harpo, Chico & Zeppo all pitch in to recover it for their hostess; the glamorous but no-nonsense "Mrs. Rittenhouse" (Margaret Dumont - who frequently struggles to keep a straight face during the ensuing shenanigans!). It quickly accelerates into a rapid-fire series of set-piece sketches - and the best game of bridge you're ever likely to see on screen - wit...