By Geronimo Stilton | Age: 7-10 | English | Page: 96 | Paperback | 14.7 x 10.7
A mysterious monster has been sighted in a lake on Mouse Island. I knew I was just the rodent to investigate! But when I travelled to the lake with my family to try to photograph the monster everything started to go wrong. Could I figure out this creature's secret? Moldy mozzarella, it was an adventure!