El secreto de Riverview College

London, 1900. After the death of her parents, Matilda Gray promised to become a strong and independent woman and has finally achieved her dream of being a teacher at an all-girls school, the prestigious Riverview College. When her favorite student, Laura, stops coming to class, Matilde senses that the girl is in danger. Her disappearance was too sudden and her legal guardian's excuses too flimsy. A message hidden in a postcard from Italy puts Matilda on the trail of the girl. Her investigation leads her to historian Stephen Fleming and, with him, to an ancient secret hidden in the most remote corners of the city.