Thou Shalt Not Covet

A scientist who is married to an amoral woman lives next door to a happily married couple. At first envying their happiness, the scientist eventually falls in love with his neighbor's wife. When her husband goes on a business trip to Africa, the scientist also goes abroad to avoid temptation but finds himself sailing from Cairo aboard the same ship as his neighbor's wife, who is traveling to join her husband. The ship is wrecked when it collides with another vessel, and the two are marooned together at the edge of the jungle, with the woman suffering from amnesia and mistaking the scientist for her husband. About to kill himself to save the honor of his neighbors' marriage, the scientist is saved by the return of the woman's memory and by the subsequent arrival of her husband. Electing to remain in the jungle, the lonely scientist toasts the couple's happiness from afar.