Georgina Rylance credited as playing...
Katherine
- Katherine: [watching Lady Tamplin, Lennox and Corky rushing to catch the train in Calais] What extraordinary people there are in France!
- Hercule Poirot: Oui, I don't think that we shall be bored.
- Hercule Poirot: [Poirot has stepped off the Blue Train in Nice. The train whistles, then someone shrieks. Lady Tamplin stumbles out of the train] My dear Lady Tamplin! What is the matter?
- Lady Tamplin: Don't, don't. I think I'm going to be sick...
- [clutching her stomach]
- Hercule Poirot: What is the matter, Lady Tamplin?
- Lady Tamplin: Oh, God... Katherine...
- Hercule Poirot: [deeply concerned] What has happened to Mademoiselle Grey?
- Lady Tamplin: She... Oh, my God... I shouldn't have looked at all that... blood.
- [Poirot rushes into the train and collides with Lenox]
- Lenox Tamplin: [screaming in horror] Mother! Mother!
- Katherine: [Poirot hesitates at Katherine's door. Then he opens it and finds Katherine also opening the door] Oh!
- Hercule Poirot: Oh!
- Katherine: I'm so sorry I kept you waiting. I didn't find my silly comb.
- [Poirot heaves a sigh of relief]
- Hercule Poirot: [Checking the number of Katherine's compartment - No. 3] Compartment number 7!
- [He runs to investigate. Katherine looks concerned]