Elizabeth Whittaker

In the novel Hallowe'en Party, Elizabeth Whittaker is a mathematics and Latin teacher at The Elms. She was a friend of Janet White. She tells Hercule Poirot that during the Hallowe'en party she helped to prepare for children, Rowena Drake seemed startled for something she saw and dropped the vase she was holding.

Portrayals
In the 2010 ITV TV adaptation featuring David Suchet as Poirot, the part of Elizabeth Whittaker was played by Fenella Woolgar. Here she is not a teacher but the church organist. She has a relationship with the teacher Janet White who is here renamed "Beatrice", and in this role she replaces Nora Ambrose. She does not witness the dropping of the vase--Ariadne Oliver witnessed it instead.

Whittaker does not really have a parallel in the France Televisions adaptation "Meurtre à la Kermesse". There is one teacher named Claire Arial but Claire is the mother of "Miranda" so it is most likely she is a parallel of Judith Butler.