McCarry served in the United States Army, where he was a correspondent for Stars and Stripes, has been a small-town newspaperman, and was a speechwriter in the Eisenhower administration. From 1958 to 1967 he worked for the CIA, under deep cover in Europe, Asia, and Africa. However, his cover was not as a writer or journalist.
An unlikely touring party of five friends embark on a road trip to deliver a brand-new Cadillac from Switzerland to the Sudan. All of them are attached to the UN in Geneva, and all of them are more than they claim to be.
Among the travellers are Kalash el Khatar, a seven-foot-tall Muslim prince; British intelligence agent Nigel Collins and is beautiful half-English, half-Hungarian girlfriend Ilona Bentley; Paul Christopher; and Tadeusz Miernik, a shy and bumbling Polish scientist who just might be the leader of a terrorist cell that could set the Cold War alight.