The Blind Goddess (1948)

Lord Brasted is in charge of a postwar fund for displaced persons. His secretary, Derek Waterhouse, visits the Prime Minister to accuse Brasted of taking money from the fund. This results in a libel case made difficult for Waterhouse for several reasons: the man who uncovered the fraud has committed suicide - or been murdered - in Prague, Lady Brasted is an old flame and being pretty devious, and he has been seeing the prosecuting lawyer's daughter.