Back in 1979 something very odd happened in the southern sub-Antarctic Indian Ocean... on September 22, one of the orbiting US Vela Hotel spy satellites noted a flash, a double flash indicating that an atomic bomb exploded close to the Prince Edward Island Group, belonging to the Republic of South Africa, 1,176 nautical miles south of Cape Town. This time one of the orbiting South African spy satellites picked up a flash report coming from a SOSUS line of unknown origin in the same area. Whoever controls such a line will control the Cape of Good Hope sea route, the major artery between East and West. Angelique Dawson and her team are heading towards Prince Edward Island to search for evidence of the SOSUS line between Cape Town and Prince Edward Island, if they find one, the West's sea route past the Cape of Good Hope will be cut during a time of war. What will they find at the uninhabited island, there is nothing there, no humans anyway. What really happened in 1979 with the Vela Incident as it became known? Code Name Lucy is the 28th book of the popular GMJ Series.