Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Curtis and his new friend, Mariska, decide to work on a new product that will hopefully keep the gravity machine from getting into the wrong hands. Little did they know that their new device would be tested sooner than they had imagined. Even with help from the mayor and Lukas, the question remains, will the gravity machine ever be secure?