The Thief with delivery to Ireland

On the ocean liner MAURETANIA, two European scientists with a dramatic new invention are rescued from abduction by the Van Dorn Detective Agency's intrepid chief investigator, Isaac Bell. Unfortunately, they are not so lucky the second time. The thugs attack again - and this time one of the scientists dies. What are they holding that is so precious? Only something which will revolutionize business and popular culture - and perhaps something more.