When you're with Geronimo Stilton, it's always a fabumouse adventure!

The most famous goldsmith in Hawaii has crafted a stunning necklace for a celebrated actress, but a cunning thief has other plans.

Can Geronimo track down the mysterious culprit before they make off with the precious jewels?

Suspense, clever twists, and hilarious moments await in this thrilling and whisker-licking-good adventure!