Katherine Royal

In the novel The A.B.C. Murders, Katherine Royal is an actress appearing in the film Not a Sparrow being shown at the Regal Cinema in Doncaster. Mr Leadbetter, one of the audience at the show, considered her one of the leading actresses in the world and had waited all week to watch her film. He was therefore annoyed when his neighbour got up to leave just at a climactic moment of the show.