Rupert and Bill's experiment with the art of topiary leads them to use a bit too much of the Professor's new growth formula to restore one of Dad's favourite shrubs to it's proper size, which results in a 'Hedgehog' the size of a tour bus running loose through the Nutwood Countryside.
Stars: Julie Lemieux, Guy Bannerman, Torquil Campbell
Director(s): Gary Hurst
Writer(s): Bob Ardiel