Mrs Crump is described as a "woman of vast proportions, with a red face". She is offended when the police come to Yewtree Lodge asking questions about what Rex Fortescue had for breakfast on the day of his death. She says that anything she has sent to the dining room has been just what it should be. It takes Inspector Neele some time to appease her.
In the BBC 1985 adaptation of the novel which formed part of the Miss Marple series, the part of Mrs Crump is played by Merelina Kendall. In this adaptation, Mrs Crump is the one who finds the body of Gladys Martin, whereas Ellen Curtis found the body in the novel.
In the ITV 2008 adaptation of the novel (Episode 1, Season 4 of Agatha Christie's Marple), the part of Mrs Crump is played by Wendy Richard. In this adaptation, Mrs Crump sees that Gladys is worried about something, and advises her to go to the police and tell them anything she knows. Mrs Crump later discovers Gladys' body.