Katherine Bird

In the short story The Double Clue, Katherine Bird is an Australian contralto singer engaged to perform at a tea party hosted by wealthy collector Marcus Hardman.

Portrayals
Katherine Bird is played by Meriel Dickinson in the film adaptation of The Double Clue in Series 3 of ITV's Agatha Christie's Poirot. In the adaptation, Lady Runcorn praised Marcus Hardman for being able to engage the services of Katherine Bird. One could not get tickets to hear her for love or money, she said. Her nationality is not stated in the film episode.