The Rough and the Smooth (US-title: Portrait of a Sinner) is a 1959 British drama film directed by Robert Siodmak and starring Nadja Tiller, Tony Britton, William Bendix and Natasha Parry. The screenplay concerns an archaeologist who has an affair with a German woman, putting his engagement to another woman in jeopardy.The film was shot at the MGM-British Studios and on location around London.It was based on the 1951 novel by Robin Maugham. It was distributed in Germany by Gloria Film. In 1961 it was given an American release by American International Pictures.