Traditional or self-published: Traditional
Rating: Disliked (Hated-Disliked-Okay-Liked-Loved)
This book's title was quite literal: One of the kids has an allergic reaction to a new animal morph they picked up. Unfortunately that idea makes no sense, and the whole book was about it.
In a series of illogical events, Rachel acquires the genes of a crocodile. But turns out she's allergic to it. How can a person be allergic to something that doesn't physically exist? Who knows. (She's not allergic to crocodiles, she's allergic to their genetic imprint.)
Anyway, being allergic to an animal you have acquired means you lose control of your morphing abilities. She turned into an elephant at home, which destroyed her house.
The subplot was that some ~dreamy~ child star was going to willingly join with the evil aliens. The subplot worked for me no better than the main plot, as it was mostly the girls fawning and drooling over him.
The conclusion was just awful. The way to deal with being allergic to a morph you acquired is to "expel" it. So in the middle of a TV show production, she had a whole entire real physical crocodile come out of her body...
The one good thing about this book (and an interesting thing about the series as a whole) was how dated it is. The books are an interesting look back into the 90s. In this book, kids used the Internet more, checking websites and such.
I was thinking I should use half stars/half steps for ratings this year, but that would make averaging things out at the end of the year harder. If I were doing that, I'd rate this between disliked and hated -- it really got enough of a negative emotional response to almost be hated.