After moving from London to an old mansion on the English coast, eleven-year-old twins Jason and Julia discover that their new home has twisting tunnels, strange artifacts from around the world, and a mysterious, locked door.
Related: Europe, Intermediate (ages 9-14), Italy, Mystery and Thriller
- ISBN: 9780439774383
- Author: Baccalario, Pierdomenico
- Illustrator: Bruno, Iacopo
- Translator: Janeczko, Leah
- Published: 2006
- Descriptors: Europe, Intermediate (ages 9-14), Italy, Mystery and Thriller