Shrinking Ralph Perfect by Chris D'Lacey
There's something a bit weird about Ralph's new neighbour, Jack Bilt, and it isn't long before Ralph finds out the strange secret. Jack Bilt has managed to get his hands on a powerful miniaturisation device and has been using it on people! He's been moving around the country to hide the fact that he has created a mini work-force to work on a miniaturised house. Once the house is complete, he plans to use it as a fairground attraction, rather like an old-fashioned freak show. Time is running out, and soon Ralph finds himself miniaturised too...