Rachael Stirling (right) with her mother Diana Rigg
Rachael Stirling (born 30 May 1977) is an English stage, film and television actress. She is the daughter of actress Diana Rigg. Stirling has appeared in two adaptations of novels by Agatha Christie, one episode of Agatha Christie's Poirot and one of Agatha Christie's Marple. Actors Marc Warren and Julie Cox appeared in the same two episodes.