Madeleine (1949)

The film begins with the purchase of a house in Glasgow by an upper middle-class Victorian family....
Their eldest daughter Madeleine claims the basement bedroom so she will have easy access to the servants' entrance and be able to entertain her lover, Frenchman Emile L'Angelier, without her family's knowledge.

The film dramatises events leading up to the 1857 trial of an otherwise-respectable young woman, Madeleine Smith (Ann Todd) for the murder of her draper's-assistant lover, Emile L'Angelier (Ivan Desny).
The trial produced the uniquely Scottish verdict of "not proven", which left Madeleine a free woman.
Cast
Ann Todd as Madeleine Smith
Norman Wooland as William Minnoch
Ivan Desny as Emile L'Angelier
Leslie Banks as James Smith
Barbara Everest as Mrs. Smith
Susan Stranks as Janet Smith
Patricia Raine as Bessie Smith
Elizabeth Sellars as Christina Hackett
Edward Chapman as Dr. Thompson
Jean Cadell as Mrs. Jenkins
Eugene Deckers as Thuau
André Morell as Defending Counsel
Barry Jones as Prosecuting Counsel
Ivor Barnard as Mr. Murdoch
David Horne as Lord Justice-Clerk
Henry Edwards as Clerk of the Court
Amy Veness as Miss Aiken
Kynaston Reeves as Dr. Penny
Cameron Hall as Dr. Yeoman