It's a monumental day in Mouseopolis. Everyone has gathered for the grand unveiling of The Big Cheese - the most magnificent morsel the city has ever seen. But when the curtain is pulled back, The Big Cheese has gone! Can Supermouse track down the creepy crooks before there is nothing left but stinky crumbs? And who is the mouse behind the mask? Packed with innovative die-cuts and flaps, this hilarious book will delight parents and children alike.