New friends Nilly and Lisa help eccentric professor Doctor Proctor to develop his latest invention, a powder that makes one fart, making them very popular at school, but someone is planning to steal the industrial-strength formula for evil purposes.
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Series
3 primary booksDoktor Proktor is a 3-book series with 3 primary works first released in 2007 with contributions by Jo Nesbø and Tara F. Chace.
