Donald Stanwood's sensational bestseller can be classified as a “retrospective detective” - the action takes place in two time planes, in Germany in the twenties and Europe-America in the sixties. Fictional characters act side by side with real historical figures (Hitler and his entourage, the film world of pre-war Berlin, the “car king” Ettore Bugatti) - in search of the “seventh limousine”, the royal “Bugatti”, which can rightfully be considered the central character of this an action-packed novel.