Photographer Maggie learns her ex-boyfriend/ex-singing partner is in the wedding she is working. Tensions run high until they sing together, remembering how good they were as a duo.
The Key is a 1958 British-American war film set in 1941 during the Battle of the Atlantic. It was based on the 1951 novel Stella by Jan de Hartog and was directed by Carol Reed. William Holden, Sophia Loren and Trevor Howard starred in the production.