Conspirator (1949)

A newlywed suspects her husband of being a Communist spy. (imdb)
Genres: Drama, Suspense/Thriller
Country: UK
Directed By: Victor Saville
Written By: Sally Benson
Starring: Honor Blackman, Elizabeth Taylor, Wilfrid Hyde-White, Marjorie Fielding, Robert Flemyng, Harold Warrender, Robert Taylor