A series of unexplainable accidents befall the people and companies responsible for developing the world's first supersonic airliner. A British agent is sent to investigate and with the help of another agent uncovers a plot masterminded by Carl Petersen who stands to gain eight million pounds if the aircraft is not ready by a certain date.
A crazed scientist keeps the heads of Nazi war criminals alive until he can find appropriate bodies on which to attach them so he can revive the Third Reich.
Stanley Baker's O'Donovan is sent to steal the plans of a rival company's racing car designs, to ensure his employers win the competition. However, when opening a safe containing the plans, he triggers an alarm leading to a gun battle where he kills a number of people. James Robertson Justice, alarmed by the scandal surrounding the killings, orders his agent be killed surreptitiously to hide his involvement with the plot. The film uses original footage from the Mille Miglia , an Italian open-road endurance race, featuring classic period racing cars.
Bickering married performers agree to star in a "Mr. and Mrs." TV show. Director Muriel Box's 1956 British comedy also stars Muriel Pavlow, Ian Carmichael, Maurice Denham and Richard Wattis.
