Edith Wetherby

In the novel Mrs McGinty's Dead, Mrs Edith Wetherby (or Henderson, possibly from a previous marriage) is the wife of Roger and the mother of Deirdre. She lives in Broadhinny, and Mrs McGinty used to be her cleaner. When Poirot interviews her about Mrs McGinty's death, she tells him she remembered the case very well, but she had only forgotten McGinty's name. She says that if she knew something about the case, she would already have told the police. Along with Mrs Upward, she is the only woman to have the same age as Eva Kane. This means Mrs Wetherby is approximately sixty years old. In addition, she had a daughter from a previous marriage who had the age of Kane's daughter.

She was described as a "small and pathetic woman" of medium height. Poirot however believed that the "poor little me" type of person can achieve its result quite well.

Deirdre Henderson claims that her mother is too weak to do her household chores, so she helped in the house during the war. The Wetherby family lived in a Victorian styled house named Hunter's Close. Maude Williams, who had recently started working for the Wethebys, told Poirot there was someone trying to get in the house through the window of Mrs Wetherby's room. It later turns out the murderer of the case had tried to place incriminating evidence against Deirdre.

It later turns out that Mrs Wetherby insisted in controlling her daughter so much because Deirdre had inherited wealth from an aunt, so the Wetherbys didn't want her to marry anyone. However, the novel leaves open whether Deirdre paired with James Bentley or not.

Portrayals
Edith Wetherby does not appear in the Agatha Christie's Poirot episode adaptation of the novel. Here it is Eve Carpenter who did not remember the name of Mrs McGinty. Since the whole Wetherby family is omitted, it is Maureen Summerhayes who goes to Mrs Upward's house instead of Deirdre Henderson.