Butterfly Effects: An InCryptid Novel
Mar 2026 · Sold by Tor Books
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About this ebook
Seanan McGuire’s New York Times-bestselling and Hugo Award-nominated InCryptid series continues with the fifteenth book following the Price family, cryptozoologists who study and protect the creatures living in secret all around us.
Sarah Zellaby is a Johrlac, a member of a species of psychic ambush predators colloquially referred to as “cuckoos.” Eight years ago, she survived the difficult, painful process of becoming a cuckoo queen...although not without costs. In the wake of her transformation, the man she loved was entirely erased from his own mind, forcing her to reconstruct him from the memories of the people who knew and loved him.
Sarah has been struggling to come to terms with her actions ever since. But there's no one else on the planet with the power to hold her accountable—until the Johrlac authorities show up. It’s time for her to stand trial for what she's done, something which can only happen on Johrlar, home world of her species, where the population is controlled by a system of unyielding hiveminds and crime is punishable by erasure.
With Sarah’s life on the line, her family will need to find a way to cross dimensional borders and survive a hostile, telepathic world in order to get her back—before the Sarah they know ceases to exist.
But no matter what happens, actions have consequences... and Sarah Zellaby is about to learn that lesson the hard way.
Chaos, noun:
1. The inherent unpredictability in the behavior of a complex natural system.
Chaos theory, noun:
1. A branch of mathematical and physical theory that deals with the nature and consequences of chaos and chaotic systems.
2. The study of unpredictable systems.
3. See also “impossible math.”
At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Sarah Zellaby is a Johrlac, a member of a species of psychic ambush predators colloquially referred to as “cuckoos.” Eight years ago, she survived the difficult, painful process of becoming a cuckoo queen...although not without costs. In the wake of her transformation, the man she loved was entirely erased from his own mind, forcing her to reconstruct him from the memories of the people who knew and loved him.
Sarah has been struggling to come to terms with her actions ever since. But there's no one else on the planet with the power to hold her accountable—until the Johrlac authorities show up. It’s time for her to stand trial for what she's done, something which can only happen on Johrlar, home world of her species, where the population is controlled by a system of unyielding hiveminds and crime is punishable by erasure.
With Sarah’s life on the line, her family will need to find a way to cross dimensional borders and survive a hostile, telepathic world in order to get her back—before the Sarah they know ceases to exist.
But no matter what happens, actions have consequences... and Sarah Zellaby is about to learn that lesson the hard way.
Chaos, noun:
1. The inherent unpredictability in the behavior of a complex natural system.
Chaos theory, noun:
1. A branch of mathematical and physical theory that deals with the nature and consequences of chaos and chaotic systems.
2. The study of unpredictable systems.
3. See also “impossible math.”
At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Seanan McGuire’s New York Times-bestselling and Hugo Award-nominated InCryptid series continues with the fifteenth book following the Price family, cryptozoologists who study and protect the creatures living in secret all around us.
Sarah Zellaby is a Johrlac, a member of a species of psychic am...
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Ratings and reviews
7 reviews
Amanda McIntosh
- Flag inappropriate
March 25, 2026
this is what I've been hoping for!!!
About the author
SEANAN McGUIRE is the author of the Hugo, Nebula, Alex, and Locus Award–winning Wayward Children series, the October Daye series, the InCryptid series, and other works. She also writes darker fiction as Mira Grant. Seanan lives in Seattle with her cats, a vast collection of creepy dolls, horror movies, and sufficient books to qualify her as a fire hazard. She won the 2010 John W. Campbell Award for Best New Writer, and in 2013 became the first person to appear five times on the same Hugo ballot. In 2022 she managed the same feat, again!
SEANAN McGUIRE is the author of the Hugo, Nebula, Alex, and Locus Award–winning Wayward Children series, the October Daye series, the InCryptid series, and other works. She also writes darker fiction as Mira Grant. Seanan lives in Seattle with her cats, a vast collection of creepy dolls, horror m...
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