Publisher's Synopsis
Josh and Danny must go on a rescue mission to save their annoying big sister, Jenny, when she accidentally uses the S.W.I.T.C.H spray on herself and turns into a crane fly! The twins know there's only one thing for it - they'll have to change themselves into crane flies too, and try to keep their sister out of trouble. However risky . . . Can the boys resist the lure of the light bulb and stop Jenny from getting legless? And will Piddle the dog be able to resist a crunchy, bugtastic snack? Petty Potts's diary entry: Victor Crouch's spies could be anywhere! I keep imagining that old eyebrow-less freak staring through my windows . . . But I suppose I do have to remember that sometimes I see and hear things which aren't really there. That's all part of the package when you're a genius. I will make sure Josh and Danny keep very watchful, though. Ah ha! Ah ha ha ha ha! Erm. Scary powerful laugh etc. (It doesn't really work, typed out, does it?)
