This atmospheric thriller provided the breakthrough role for Hayley Mills, playing opposite her father John.

Polish sailor Korchinsky (Horst Buchholz - The Magnificent Seven) is furious to discover his lover has left him for another man and shoots her. The crime is witnessed by 10-year-old Gillie (BAFTA-nominated Mills) who steals a gun. Investigating officer Graham (John Mills) is in pursuit when Korchinsky abducts Gillie.