Fourteen-year-old Harry Potter joins the Weasleys at the Quidditch World Cup, then enters his fourth year at Hogwarts Academy where he is mysteriously entered in an unusual contest that challenges his wizarding skills, friendships and character, amid signs that an old enemy is growing stronger.

After the death of the uncle who had been his guardian, fourteen-year-old Alex Rider is coerced to continue his uncle's dangerous work for Britain's intelligence agency, MI6. "Cuando su tío muere en sospechosas circunstancias, Alex Rider encuentra, a sus catorce años, que todo su mundo se ha puesto patas arribas. En apenas unos días experimenta una transformación asombrosa: deja de ser un escolar para convertise en un superespía."--P. [4] of...