Alfred Hitchcock once told François Truffaut that his 1934 version of this exciting thriller - about a family innocently involved in an assassination plot - was "the work of a talented amateur and the second was made by a professional". There's no doubt that this colour remake is technically more accomplished, while the deft tinkering with the finale adds considerably to the suspense. But not all of the additional 45 minutes are as well spent. Que Sera, Sera might have won the Oscar for best song, but its inclusion was solely to mollify Doris Day fans and the storytelling is occasionally over-deliberate. Nevertheless, James Stewart is superb, and Bernard Miles and Brenda de Banzie make admirable adversaries.

A couple vacationing in Morocco with their young son accidentally stumble upon an assassination plot. When the child is kidnapped to ensure their silence, they have to take matters into their own hands to save him.