Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
An eccentric millionaire’s will contains a ploy - solve a puzzle or forfeit the entire benefit - within a month. Two heirs take the challenge, helping and hindering each other in a frantic race against time Hidden somewhere in an old mansion is the answer. Where is it?