Written by the award-winning author Ali Sparkes

Hilarious adventure stories for 7+ boys and girls - the mad scientist next door invents a potion which can turn Josh and Danny into a whole host of creepy creatures! Two boys, one serum, and a world of trouble!

  • Fast-paced and fiendishly fun series
  • Full of fascinating (and often disgusting!) facts about the natural world
  • Illustrated throughout in black and white by Ross Collins
  • Written by Ali Sparkes, winner of the Blue Peter Book of the Year Award
  • Fantastic activity section at the back of each book with quizzes and games
  • Each book can be enjoyed as a stand-alone or as the next instalment in the exciting SWITCH series
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Series contains:

  • 6 BUGSWITCH books
  • 6 REPTOSWITCH books
  • 1 amphibian bumper edition
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  • ‘Great excitement lies at the heart of these pacy adventures’


  • ‘There’s definitely enough here to provide for high drama – the transformation, the monsters, the perils of being small in a huge world, but there’s more here than meets the eye. . . I can trust that this series will have some great surprises to come.’


  • ‘This book has helped my son, 5, move on from picture books at bed time to one with more words. An excellent choice for reluctant readers who will be thrilled at the idea of turning into a bug, mad inventors and lots of adventures.’

    Amazon reviewer

  • ‘The book is great fun and involves the reader, who really feels as though they are part of the story. Along the way the reader learns a surprising amount about pond life.’


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SWITCH activities

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