Miss Trotter

Miss Trotter was a non-canonical character who was created for the film adaptation of The Third Floor Flat in Series 1 of ITV's Agatha Christie's Poirot. Miss Trotter was the live-in maid or domestic help of Ernestine Grant. She had come back to Mrs Grant's flat from a day off and had left the evening post on the table and had then gone straight to bed. She did not see Mrs Grant and assumed that she had turned in. She did not notice the dead body of Mrs Grant because it had been moved behind a curtain.

Miss Trotter was played by Susan Porrett. There is no such character in the original story. Ernestine Grant also had a live-in maid there but her name is not stated.