*The Secret Tomb* by Maurice Leblanc is a novel written in the early 20th century. Set against a backdrop of mystery and adventure, the story follows Dorothy, a young gypsy girl, and her companion, Saint-Quentin, as they uncover the secrets surrounding the Château de Roborey and its hidden treasures. 

The narrative is rich with themes of intrigue, familial connections, and the quest for a lost legacy. It begins with the characters living in a gypsy caravan, awakening at dawn. Dorothy embarks on a mission to find her missing companion, Saint-Quentin. As she explores the surrounding area, the reader discovers her adventurous spirit and her instinct to protect her friends. 

The plot thickens as hints of hidden treasure and potential danger emerge when Saint-Quentin's secretive activities at the château are revealed. Tension builds with the arrival of dark figures, suggesting an impending confrontation related to the mysteries of the château, particularly concerning the name "Roborey," which resonates with Dorothy and evokes memories of her past.