Geronimo is on the hunt in this special edition adventure!

Grandfather William was throwing me, Geronimo Stilton, a party -- it had been 10 years since I published my first book! He wanted me to write a new book especially for the occasion. Then my laptop was stolen right from under my snout. Cheese niblets, how terrible! Could my friends and I find my computer and print my book all in time for the party?

BONUS! After the story, read an extra Mini Mystery adventure: THE LAKE MONSTER. When a mysterious monster is sighted in a lake on Mouse Island, Geronimo is called in to investigate! But can he figure out this creature's secret?

PLUS jokes galore!