Please log in to download the material. Not yet a Blackcat-Cideb user? Register now..
Are you an Italian teacher? Reminder: to access the teacher downloads, you will need to request the access password from your referring agent.
Enrique Alvarado goes back to his house in Potes, Cantabria, for the holidays. He has an appointment with Mr Otero, a famous retired chemist, who wants to show him an important discovery. Suddenly Mr Otero disappears without a trace. Enrique and Camila, a childhood friend, start investigating to find their friend and work out his discovery…