Inspector Stilton and his sidekick Nat are enjoying a well-earned holiday in a seaside resort. But when Countess Horne's precious jewels are stolen, they immediately take the case! Follow the intrepid pair as they interview the suspects - can you spot the thief?

Sam wants to build a killer robot. But first he has to collect all the parts. He begins with an arm. Next he tries the head. Strangely, as soon as the parts click together, they start acting as if they have a life of their own! What's going on? And what will happen when he puts together the whole robot? Not only does Sam have the coolest robot he's ever seen, but his uncle has been odder than usual. And there is a weird light coming from the basement of his shop. But the robot is all Sam can think about. Its glowing red eyes seem to be trying to tell him something very important A thrilling read that will also tickle your funny bone, from the author of the popular Jack Jones and the Pirate Curse.

By solving riddles and spotting clues in the illustrations, the reader is asked to help the ingenious rat detective Inspector Rockfort solve the mystery of jewels missing from the necklace of Countess Horne.