Le parfum de la dame en noir

"Le parfum de la dame en noir" by Gaston Leroux is a novel published in 1908. The second adventure of young reporter Rouletabille picks up after the events of "The Mystery of the Yellow Room." When the newlywed Darzacs retreat to a fortress-like château on the Mediterranean coast, the dangerous criminal Ballmeyer appears determined to terrorize them. Rouletabille must protect his own mother while confronting his father—the master criminal who mysteriously penetrates the castle's defenses to strike again.