Author: Prats Martínez, Lluís ; Roig Tió, Enric
- Children/Young
- Bambu
- ISBN: 9788483430149
- Release Date: 01-01-1970
-Reviewed by: America Reads Spanish

Mystery, adventure and a bit of science fiction are the genres which give form to this story of short chapters and fast-paced prose. Two adolescent boys accompany their parents to Paris on a business trip. By chance, they discover an abandoned laboratory, full of sophisticated inventions, one of which is capable of producing terrible hallucinations. The investigative company Trouton wants to use this machine for a million-dollar project and in order to obtain it, they kidnap one of the youngsters.