The intrepid reporter and amateur sleuth Joseph Rouletabille becomes involved in the investigation of a hideous crime committed in a room painted yellow, whose door was locked from the inside…
Professor Strangerson
Robert Darzac
Frédéric Larsan
Mathilde Strangerson
Joseph Rouletabille
Jean Sainclair
Daddy Jacques
Mr. Bernier
Mrs. Bernier
Judge Marquet
