Based on of all things a Mr. Moto story, Stopover Tokyo has US Intelligence Agent Robert Wagner foiling a plot to assassinate the American High Commissioner at a ceremony devoted to eternal peace. Along the way Wagner gets a chance to romance Joan Collins working as a ticket agent for British Airlines. Definitely mixing business with pleasure.
Another agent Ken Scott has staked his claim on Collins before Wagner got there and that does cause some friction between them. Nevertheless Wagner and Scott do get the job done.
Leading the opposition is Edmond O'Brien who has the guise of an American businessman, but is secretly a Communist spy. The 'High Commissioner is Larry Keating and his wife is Sarah Selby who is more concerned for her husband's safety than he is.
We did not have a High Commissioner in Japan at that time, we had an Ambassador as our occupation was formally over. We did have a High Commissioner for the Ryukyu Islands chief among them being Okinawa which was our's by UN Mandate. They were not returned to Japan until the Seventies.
Stopover Tokyo's biggest asset is the location cinematography done in Japan, particularly in Kyoto the ancestral home of the Emperors. Kyoto was untouched by American bombing and is one of the few places that retains a traditional Japanese look from before World War II. As the city is sacred in Shinto religion the Japanese located no war industries in or near it and we obliged by not bombing same.
For all of that Stopover Tokyo is a routine action/adventure Cold War story. It might have helped if 20th Century Fox had gotten Peter Lorre to do Mr. Moto in the film.
