# Mirelle — The Mystery of the Blue Train character guide > Mirelle in The Mystery of the Blue Train by Agatha Christie. **Role:** supporting **Also known as:** Mademoiselle Mirelle, the dancer, the little Mademoiselle **First appearance:** 0007-vi-mirelle ## Snapshot A notorious Russian dancer with orange lips and expensive tastes, she adores Derek Kettering but has no intention of sinking with his ship. ## Who they are Mirelle receives Derek in her amber-cushioned flat, listens to his talk of divorce and ruin, and coolly weighs whether to stay. She is beautiful, calculating, and frank about her own survival: when Derek asks if she will stand by him once the creditors arrive, her shrug says more than her words. Her black-pearl requests and her association with the fashionable composer Ambrose place her at the centre of Riviera gossip. She matters because her connection to Derek gives the investigation a very public, very compromising thread to pull. ## Relationships ### [Comte de la Roche](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/characters/comte_de_la_roche) _romantic_ Mirelle is the Comte's former lover and a dancer, with a volatile and jealous relationship. ### [Comte de la Roche](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/characters/comte_de_la_roche) _romantic_ Mirelle is the Comte's former lover and a dancer, with a volatile and jealous relationship. ### [Comte de la Roche](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/characters/comte_de_la_roche) _romantic_ Mirelle is the Comte's former lover and a dancer, with a volatile and jealous relationship. ## In the story ### [In Curzon Street](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/iv-in-curzon-street) Mentioned as the dancer Derek Kettering is openly accompanying. ### [VI: Mirelle](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/vi-mirelle) Derek's mistress; reveals her mercenary nature and suggests using Ruth's past with the Comte de la Roche as leverage. ### [An Offer Refused](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/ix-an-offer-refused) Mirelle is mentioned as the reason Derek might accept the bribe, to continue his life with her. ### [Van Aldin Gets a Telegram](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xiii-van-aldin-gets-a-telegram) Mentioned as having traveled on the same Blue Train as Derek Kettering. ### [XVI: Poirot Discusses the Case](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xvi-poirot-discusses-the-case) Mentioned as the dancer accompanying Derek Kettering on the Blue Train and as the cause of Ruth's divorce complaint. ### [XVIII: Derek Lunches](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xviii-derek-lunches) Mirelle approaches Derek at the Negresco, trying to rekindle their relationship after learning of his potential inheritance. ### [An Unexpected Visitor](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xix-an-unexpected-visitor) Mirelle arrives at the Comte's villa in a fury, accusing Derek Kettering of murdering his wife and urging the Comte to inform the police. She claims to have proof and leaves after delivering her message. ### [XXIV: Poirot Gives Advice](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xxiv-poirot-gives-advice) Observed by Poirot waiting in a second car; Derek acknowledges she has not accepted their breakup. ### [XXV: Defiance](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xxv-defiance) Admits to sending the Comte but retains the real proof; threatens Derek with knowledge of his actions on the train. ### [Interview with Mirelle](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xxvii-interview-with-mirelle) Derek Kettering's mistress; gives a statement accusing Derek of murdering his wife, but shows inconsistencies when questioned by Poirot. ### [XXVIII: Poirot Plays the Squirrel](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xxviii-poirot-plays-the-squirrel) Seen talking with Papopolous in the Casino hall, pleading for time to get money. ### [A Letter from Home](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xxix-a-letter-from-home) Confronted by Poirot about entering Mrs. Kettering's compartment; becomes hysterical and refuses to answer further questions. ### [XXXI: Mr. Aarons Lunches](https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/chapters/xxxi-mr-aarons-lunches) Discussed as a temperamental dancer who has taken up with the ex-Prime Minister of Greece and is rumored to wear a large ruby called 'Heart of Fire.' ## Links - HTML: https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/characters/mirelle - Book: https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se - All characters: https://www.betterreads.dev/discover/the_mystery_of_the_blue_train_se/characters