An important scientist living in Baja is dying of cancer. Our hero, a U.S. state department courier, is sent by plane to deliver radioactive material for cancer treatment. The emergency delivery does not go smoothly.
Steve is tasked with retrieving American citizen Sally Towne from Jakarta back to the U.S. Easier said than done as Sally is bound and determined to locate her missing fiancé.
In Helsinki Steve introduces two young people who become romantically involved but the situation becomes complicated as their feuding families differ politically.
Steve must retrieve a washed-up Skipper from Macao back to see his dying Commodore father in San Francisco. No easy task since the Skipper is ashamed to show his face back in the states. The ruthless smugglers with whom he is associated also complicate matters.
While dining with a Spanish Duchess, Steve is attacked and the Duchess abducted. Smitten with the Duchess, Steve is desperate to rescue her before he must depart for Casablanca.
Upon arriving in Marseilles, Steve finds his travel companion dying on the docks from a stab wound. The man's dying wish is that Steve take care of his 13-year old daughter.
While on assignment in Monte Carlo, Steve finds an American intelligence agent who has been severely beaten and robbed. Steve agrees to undertake the agent's assignment - retrieving a roll of film with incriminating photographs of a corrupt politician.
McQuinn, traveling to Sofia on the Orient express, helps a Bulgarian diplomat being returned to his country to face trumped up charges for jewel theft.
Diplomatic courier Steve McQuinn is asked by the U.S. government to check out the background of an American chorus girl slated to marry the Prince of Borneo.
