A masked figure is stalking the headquarters of the Insect Brigade.  What does he want and why does he know so much about their inner workings?
The thirteenth volume of Essays in Idleness.
Los 13 volúmenes de "Ensayos sobre el ocio".
Era los trece volúmenes 
de "Ensayos en ociosidad".
O décimo terceiro volume de
 Falando Sobre o Ócio.