The best and shortest summary I can give for my review for this book is: It was cute.
Despite my 3 stars, I have mostly positive things to say about it. It was fun, it had nice quick chapters which made it an easy and fabulously bite-sized read, and I'm a fan of the ease and snark of JLB's writing, especially prominent and more finely honed in her newer series (Inheritance Games, The Fixer, Debutantes), it reminds me of Kelley Armstrong's, if a bit younger oriented, which is where my more neutral rating comes in. I have almost nothing against this book at all, but I think the much younger me of ten+ years ago who had been obsessed with spies and anagrams and the idea of being a teen secret agent would have LOVED this a lot more than current me does. I mean, I was getting major Totally Spies vibes from the whole thing, complete with the 90s/early 2000s Buffy-esque California girl speak, the secret hatches in the school, the makeup compact gadgets, the sparkly flip phones, the iPod tasers, the necklace cameras and invisible ink and sequined tank tops and pink glitter gel pens, and etc, etc, like this book was published in 2008 and it feels soooo 2008 in a way that's almost sickeningly nostalgic. Had I read this in that year or anywhere between the ages of 8 and say 13-14, I would have lost my mind, but as it stands right now, it all felt a little silly, dated and over the top, requiring quite a stretch of suspension of disbelief in a way better suited to/that I'm more likely to give to cartoons (like Totally Spies) or a Family/Disney or YTV channel style TV show rather than a novel.
There was also a little bit of a disconnect between the whole cheerleaders as spies premise and the actual spy mission we got, one rooted in the totally bizarre realm of high school drama and pop music and bubble gum bombs and high tech hair dryers, and the other rooted in the rather lackluster and unmatching in tone law firm/terrorist/generic intel/security hack plot. If the mission felt more cohesive with the premise and level of silly shenanigans we got, like say how Totally Spies are fighting mimes and spa gurus and the like, maybe it would have clicked more? Or vice versa, if there was less cartoony gadgets and 2008 hijinx and more grounding to the premise? I don't know, it just felt off. Also, the one major thing that sets it apart from Totally Spies in a way I'm not a fan of is how the Totally Spies girls enjoyed the girly California girl lifestyle, while also happening to be spies who kick ass, and it wasn't ever made out to be a bad or shallow thing, same with say Buffy the Vampire Slayer enjoying wearing cute outfits or cheerleading or dating. But the main character in this book, Toby, has a massive not like other girls complex and holier than thou attitude so full of herself that it becomes unpleasant to read at times, especially since even as she learns their secrets and gets to know her fellow cheerleaders, her thoughts on them don't really change and she tends to come off as the most shallow of them all.
Anyway, in the book itself, they compare themselves to "Charlie's Angels meets James Bond meets Bring it On." And that's honestly pretty apt. Throw in a little bit of Clueless and maybe a little bit of Ocean's 11 in the vibes they gave off when introducing the squad, twins and all, and then maybe a touch of Mean Girls, (also maybe a touch of sugar, spice, everything nice and whoops, chemical x) then stir it all in the pot, and uh yeah, there you have it. But seriously, if Jennifer Lynn Barnes was not inspired by Totally Spies in even the slightest bit to write this, then I'll eat my hat, no, no, I'll eat my 2003 Hilary Duff CD.
So yeah, like I said at the beginning. Cute, silly, quirky, 2000's kid nostalgic, the book equivalent of bright pink cotton candy, sweet and fluffy, though not entirely filled with much substance. Definitely for the lower age range of the YA spectrum, but 2008 me? I think she would have given 5 stars. 2013-2014 me having read and loved Alex Rider, which handled the teen spy dynamic with fun gadgets and over the top plot balance a little better? Well, jury's still out. But 2022 me unfortunately has to come in with 3 stars (affectionate), which is nothing to sneeze at!
I did like this better than the first Naturals book.
Last thought though: Bubbles? Really? Powerpuff girls, much?