They turn into spiders! Unfortunately, the first person who sees them is their big sister Jenny - and she is not a fan of spiders! After a series of hair-raising adventures and with the help of some friendly rats they manage to get back to Petty Potts. She's not all bad, but she's definitely a mad scientist! She turns the boys back and they escape, but are their adventures over?
Additional back matter includes a final note from Petty Potts with more hints on her secret S.W.I.T.C.H formula and the mysteries she hints at, a glossary, bibliography, list of the current titles in this series, and biographies of the author and illustrator.
Verdict: I think kids will really like the combination of facts and fiction in this story. It's just gross enough with lots of crazy adventures and only a little over 100 pages long. It could have been funnier and the writing falls a bit flat in places, but quite good overall. Add this if you need more beginning chapter books in your library. I will probably wait until next November when I add new series to the collection, since this is available only in paperback or expensive library bound editions. There are currently six books available in the series.
ISBN: 9780761391999; Published May 2013 by Darby Creek/Lerner; Egalley provided by publisher through Netgalley; Added to library's series wishlist