Butterfly Effects
DETAILS: Series: InCryptid, #15 Publisher: Tor Books Publication Date: March 10, 2026 Format: eARC Length: 432 pg. Read Date: February 23-24, 2026

Huh. Didn’t see that coming.
The InCryptid series is really a series of small arcs featuring a particular narrator before we move on to the next. Back in 2020 and 2021, we got an arc featuring Sarah Zellaby. Then we moved on to a pair of books focusing on Alice and then two on Aunt Mary.
But whoops–we’re not actually done with Sarah’s arc. It wasn’t a duology after all; it was a trilogy, and McGuire’s back to tie everything up.
I didn’t think we needed that. But now I see how much we did and how the series as a whole is better for it.
So, What is Butterfly Effects About?
So, we’d learned in Sarah’s books that the Johrlac on Earth (and in the wake of destruction they’d left behind) aren’t Johrlac-proper, they’re a bunch who’d been ejected from their home world for being as awful as we’d thought. These cuckoos were practically a separate species at this point, and most of what people on Earth knew about the cuckoos or Johrlac was horribly wrong.
And basically, everyone had moved on–it didn’t matter anymore, because there were only a handful left on Earth and Sarah had removed the ticking genetic time-bombs from them.
Except…the Johrlac are a really uptight bunch and once they saw what Sarah had done, they came to Earth and arrested her to be tried for crimes against Johrlac law. They also kidnapped Arthur to be used as State’s Exhibit A in the show trial, right out of the Edo of Rubicun III vs. Wesley Crusher on “Justice.”
Back on Earth, Annie and Alice get word of this, so they grab Thomas and use some of Alice’s remaining travel spells and inter-dimensional know-how to launch a rescue mission (and Sam insists on coming along).
And things get interesting from there…
We Sing It Anyway
I almost never discuss the novellas packaged with McGuire novels–and I’m not going to do that this time, either. Primarily because it’s solely “here’s what happens because of the novels conclusion next.” So to really talk about it would be to talk about the last half-chapter of the novel in detail.
So why am I talking about it at all? Just because I’m sure some readers are like me and don’t always read the novellas. Don’t skip this one. Trust me.
Why did I pick this up? Why did I keep reading?
I grabbed this because I’ve been on board for this series since the beginning.
Why did I keep reading? Pretty much everything I have said–or am about to say–about the book. I wasn’t prepared for McGuire to revisit this storyline, and I enjoyed getting to see what she was up to. I thought the world of the Johrlac was utterly fascinating–and watching the chaos that follows Annie, Sarah, and Alice as they interact with it was as entertaining as it could be.
What does this book tell us about humanity?
That’s the tricky thing, isn’t it? Given this series, I’m going to have to broaden this idea to “people” or “persons.” Also, a good part of it is about just how non-human some of these people can be.
Yet there’s something that humans and other non-human species can relate to in the middle of all the otherness.
(also, McGuire’s a human and all of her species are going to reflect that in some way, it can’t be helped)
The culture of the Johrlac is all about the collective–but there are several individuals expressing themselves (and we can assume some others we don’t encounter) in various and sundry ways. Most of these individual expressions are small–insignificant, really. But you get enough insignificant acts, and something noticeable can happen.
That’s one of the main things this book is about. While collectives–like both the Johrlac or the Price-Healys–are important, and together can accomplish great feats. It’s the individuals involved in them, and their interests and strengths, that make the collectives powerful.
So, what did I think about Butterfly Effects?
This is one of the better books in this series lately. I do worry that we’re becoming too dependent on the Annie/Sam/Alice/Thomas antics to the detriment of the others. But also? I don’t care, because I like Annie/Sam/Alice/Thomas, and everyone else is busy raising kids, so I prefer them out of danger.
The story took a lot of twists and turns that keep you on your toes. Not just on your toes, either, there are a few outright surprises. Some of those surprises come from the fact that the main action of this novel isn’t on Earth, and our friends don’t have to pull their punches so they can stay under the radar. Annie and her fire can do a whole lot when given the chance.
But this isn’t all danger, twists, and fire–there’s a lot of fun to be had on this alien world. It’s so strange that you just can’t help but have fun.
Action, heart, and plenty of smiles. This series shines brightest when McGuire brings these elements to the forefront. Butterfly Effects is proof of that.
Disclaimer: I received this eARC from Tor Publishing Group via NetGalley in exchange for this post which contains my honest opinion—thanks to both for this.
This post contains an affiliate link. If you purchase from it, I will get a small commission at no additional cost to you. As always, the opinions expressed are my own.
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