Talk about things coming full circle? Maria (Valentina Cortese) and her sister "Nora" (Audrey Hepburn) are in Paris seven years after their father was murdered. Surprisingly, she encounters her ex-boyfriend "Louis" (Serge Reggiani) who just happens to be plotting to visit the same comeuppance on the dictator who committed that very murder. Reluctantly, "Maria" agrees to carry the bag that contains a bomb, and to leave it adjacent to their quarry, but their timings go awry and soon the police are looking for the murderer of an innocent party guest. Wracked with guilt, she finds herself…