Character guide

Joseph Rouletabille

major

Also known as young Rouletabille, Monsieur Rouletabille, friend Rouletabille

Young journalist and amateur detective investigating the mystery at the Glandier estate.

Mademoiselle Stangerson

major

Also known as Mathilde Stangerson, Mathilde

The victim of an attempted murder in the locked Yellow Room; daughter of Professor Stangerson.

Frédéric Larsan

major

Also known as Monsieur Frédéric Larsan, Larsan

Famous detective from the Sûreté who competes with Rouletabille to solve the case.

Monsieur Robert Darzac

major

Also known as Robert Darzac, Monsieur Darzac, Darzac

Fiancé of Mademoiselle Stangerson and a suspect in the attack.

Professor Stangerson

major

Also known as Monsieur Stangerson, Stangerson, the illustrious Stangerson

Renowned scientist and father of Mademoiselle Stangerson, living at the Glandier estate.

Daddy Jacques

supporting

Also known as Jacques, Daddy

Old servant and caretaker at the Château du Glandier.

Monsieur de Marquet

supporting

Examining magistrate in charge of the investigation.

Mr. Arthur W. Rance

supporting

Also known as Arthur Rance, Mr. Rance, Arthur William Rance

American who was present at the time of the attack; a former suitor of Mathilde.

Ballmeyer

supporting

Also known as the notorious Ballmeyer, Jean Roussel

Notorious criminal whose identity becomes central to the mystery.

Sainclair

supporting

Also known as Monsieur Sainclair

Friend and chronicler of Rouletabille; the narrator of the story.

Daddy Mathieu

minor

Also known as Mathieu

Local farmer and witness at the Glandier estate.

Madame Mathieu

minor

Wife of Daddy Mathieu; provides testimony about the night of the crime.

Daddy Bernier

minor

Also known as Bernier

Gardener at the Château du Glandier.

Madame Bernier

minor

Wife of Daddy Bernier; also works at the château.

Mother Angenoux

minor

Local woman who assists with household matters at the château.

Maître Henri Robert

minor

Also known as Maître Robert

Lawyer who appears during the legal proceedings.

Monsieur de Maleine

minor

Also known as Monsieur Maleine

Neighbor and acquaintance of the Stangerson family.

The Green Man

minor

Mysterious figure seen near the château; possibly the murderer.

Monsieur Dax

minor

Police official involved in the investigation.

Sylvia

minor

A woman mentioned in connection with Ballmeyer's past.