Chaos, wizardry and a gang of kind-of ghosts, in this hilarious adventure from bestselling author, Steve Cole. Noah's mum's new invention can zap ANYTHING into a ghost of its former self.It's still there, but you can't see it. You can't touch it. When the sinister ';Seerblight Solutions' steal her invention, Noah is zapped and finds he's not the first to have been turned ';invisible' through the ages. With all humankind in terrible danger, Earth's last line is defence is one you've never seen or heard of: Invisible Inc. A medieval knight. A Victorian inventor. A poetic pony. And an ordinary boy.Saving the world? THEY'LL SEE TO IT!