# The Mystery of the Yellow Room — Character guide

> Key figures in The Mystery of the Yellow Room by Gaston Leroux.

- [Joseph Rouletabille](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/joseph_rouletabille.md): Rouletabille arrives at the Glandier not as an official investigator but as a journalist with a reputation for seeing what others miss. His method is almost infuriating: he hoards his deductions, drops cryptic phrases li
- [Mademoiselle Stangerson](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/mademoiselle_stangerson.md): Mademoiselle Stangerson is no passive victim: she works alongside her father until midnight on his treatise, borrows a revolver without telling anyone, and locks herself in with a precision that suggests she expected dan
- [Frédéric Larsan](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/frederic_larsan.md): Larsan is everything the official investigation has: reputation, experience, and the quiet authority of a man who has seen too much to be surprised. He is elegant, self-assured, and slightly condescending — the kind of d
- [Monsieur Robert Darzac](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/robert_darzac.md): Darzac is a Sorbonne professor on the verge of marrying Mademoiselle Stangerson when the attack occurs, and his behaviour in the aftermath is anything but reassuring. He is frightfully pale, his face lined with suffering
- [Professor Stangerson](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/professor_stangerson.md): Professor Stangerson is the illustrious man of science whose treatise keeps the household at the Glandier past the usual season, and whose absorption in his work leaves his daughter vulnerable. He works late in the labor
- [Daddy Jacques](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/daddy_jacques.md): Daddy Jacques is the honest, garrulous servant whose testimony provides the first detailed account of the night of the crime. He was cleaning instruments in the laboratory, heard Mademoiselle lock her door, heard the cat
- [Monsieur de Marquet](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/monsieur_de_marquet.md): Monsieur de Marquet presides over the inquiry into the Yellow Room affair, but his true passion is the stage—he writes plays under the name 'Castigat Ridendo' and savors cases that furnish him with drama. He throws himse
- [Mr. Arthur W. Rance](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/arthur_rance.md): Arthur Rance occupies the room at the far end of the left gallery, a position that gives him an uninterrupted view of the corridor from end to end—a fact Rouletabille exploits when he stations Sainclair in a dark closet 
- [Ballmeyer](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/ballmeyer.md): Ballmeyer entered Mathilde Stangerson's life as Jean Roussel, a charming suitor she married in Louisville before discovering his true identity and his criminal reputation. Believed dead, he resurfaces to claim her, threa
- [Sainclair](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/sainclair.md): Sainclair accompanies Rouletabille to the Glandier and serves as his chronicler, recording the inquiry with a lawyer's precision and a friend's loyalty. He is uneasy about playing the spy—stationed in a dark triangular c
- [Daddy Mathieu](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/daddy_mathieu.md): Local farmer and witness at the Glandier estate.
- [Daddy Bernier](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/daddy_bernier.md): Gardener at the Château du Glandier.
- [Madame Bernier](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/madame_bernier.md): Wife of Daddy Bernier; also works at the château.
- [Mother Angenoux](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/mother_angenoux.md): Local woman who assists with household matters at the château.
- [Maître Henri Robert](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/maitre_henri_robert.md): Lawyer who appears during the legal proceedings.
- [The Green Man](https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters/the_green_man.md): Mysterious figure seen near the château; possibly the murderer.

HTML index: https://www.betterreads.dev/discover/the_mystery_of_the_yellow_room_se/characters