Airing in a Closed Carriage is a 1943 British historical novel written by Marjorie Bowen under the pseudonym of Joseph Shearing. Two brothers develop a fierce rivalry over the same woman. It was inspired by the real life murder trial of Florence Maybrick.
Film adaptation In 1947 the novel was turned into a British film The Mark of Cain directed by Brian Desmond Hurst and starring Eric Portman and Sally Gray. It was one of four adaptations of Bowen's novels made in 1947–48.Mayer & McDonnell p.279
References
Bibliography Geoff Mayer & Brian McDonnell. Encyclopedia of Film Noir. ABC-CLIO, 2007.