Disney produced this distilled Hitchcockian suspense yarn, diluted for the consumption of children. Hayley Mills stars as Nikky Ferris who is spending time in Crete at a small inn called The Moon-Spinners with her Aunt Frances (Joan Greenwood). One day Nikky discovers a handsome young man, Mark Camford (Peter McEnery), wounded in an empty church nearby. It turns out that Mark was once a London bank messenger, but he lost his job after a major jewel robbery. Tagged as a suspect, Mark has made his way to the inn to gather evidence against the inn's owner, Stratos (Eli Wallach), who Mark thinks is the real jewel thief. Nikky and Mark fall in love and decide to capture Stratos together. Silent screen vamp Pola Negri makes a luminous appearance as a jewelry aficionado.