Lights, Camera, Action --Geronimo Stilton goes Hollywood as he tires to solve a new mystery surroundingthe production of Block Cheddar 4!Geronimo Stilton is gettinginto the movies when he is invited by an old filmmaker friend, director E.J. Sprocket, to visit the set of Block Cheddar 4, starring Jack Vole.

Convincedthat this could make for an interesting article he brings Thea, Benjamin, andPandora along.

But soon, they discover that it's not all glitz and glamour asstrange happenings have been plaguing production causing the film to go offcourse.

Will Geronimo's acting career be over before it starts?

Is there a MOLEon the set? As E.J. would say, "That's show business for ya,baby!"