I received this book for free from the Author in exchange for an honest review. This does not affect my opinion of the book or the content of my review.
Havoc by Constance Fay Series: Uncharted Hearts #4
Published by Self Published on August 11 2026
Genres: Adult, Science fiction
Pages: 379
Format: eARC
Source: Author
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The nitty-gritty: A thrilling space adventure with colorful, complex characters and non-stop action and danger, Havoc is the perfect wrap-up to Constance Fay’s addictive sci-fi romance series.
And so with Havoc, the adventures of the crew of the Calamity and their significant others come to a close, sadly. I have enjoyed this series so much, and all four books have been strong from start to finish. I would recommend reading the books in order, because you’ll pick up on all the world-building and character development along the way, making it a richer reading experience. Plus you wouldn’t want to miss a moment of these characters’ adventures!
Each book in the series follows one of the Calamity crew members and their romantic partners, and each one focuses on a specific space adventure. In Calamity, we followed the Calamity’s captain, Temper, who meets and falls for Arcadio Escajeda. Fiasco follows Cyn, a bounty hunter, and the Calamity’s medic Micah. And in Chaos, ship’s engineer Caro takes the reins, and she meets super solider Levi while trying to break someone out of a prison.
In Havoc, the main character is Itzel, a woman I was immediately drawn to in the first book. Itzel is a Voidian assassin for a religious cult, taking orders from her goddess when someone needs to be killed—until the day she killed the wrong person and was kicked out of the monastery. Ever since, she’s been part of Calamity’s crew, but she still fervently believes in her religion and wants nothing more than to be taken back in.
One day she’s approached by one of the Voidian acolytes who offers her one last job. In exchange, the order will hand over information about Itzel’s parents, who she’s been searching for for years. The job is to assassinate Lucian Chandra, one of the heads of the powerful Chandra Family, and conveniently, he’ll be at the upcoming Family Summit for the trial of the Pierce Family, one of the most dangerous and corrupt families in the solar system. But then Itzel realizes who Lucien is—the kind, sexy man she met years ago when her last job for the goddess went wrong.
As Itzel tries to come to terms with killing the man she’s been longing for all these years, while staying true to her beliefs at the same time, bad things are happening behind the scenes at the Summit. And when the trial takes a turn for the deadly, Itzel and Lucien must work together to help save their friends and stop a deadly new lifeform from destroying the world.
Havoc is nicely balanced, with plenty of exciting action, nice character development, a bit of spice, and lots of fun banter. The characters are often in terrible danger, and the high stakes made this a quick read. But even with all the threats against Itzel, Lucien and the others, this is a “happily ever after” series, so you know everything is going to work out in the end.
Fay delves a bit deeper into the world building too. In the first book, the idea of the Five Families, the ones at the top of the food chain who set the rules for everyone else, wasn’t completely explained, and the author has been expanding that idea over the course of all four books. In Havoc, the destructive results of these families having too much power really hit home. The Pierce family has always been slimy, and it’s finally time for them to be tried for their horrible actions over the years. Of course, things don’t go the way they should, which is why this series is so much fun.
I loved following Itzel and Lucien and their burgeoning romance. Itzel is such an interesting character. She’s a deadly assassin who has been trained since she was very young, but when she meets Lucien, she begins to question the morality of killing, something she’s never thought about before. Lucien is a calm, sweet man, despite the status of his family, and he’s the perfect partner for Itzel. Itzel nevers lets herself get emotionally involved with her partners, but Lucien is different and you can see her opinions about relationships changing the more time they spend together.
The couples from the previous three books all get some page time too. It was nice to see their relationships are still going strong, but I also loved that they still have to work through issues, no matter how much they love each other. Fay also tackles Temper’s fraught relationship with her brother Frederick, who kicked her out of the Reed family after what he thought was a betrayal. In Havoc they are forced to work together, but the undercurrent of hate that they feel for each other is still there, causing lots of emotions to come to the surface.
I thought the ending was perfect, if a little rushed. My only complaint is that one story element introduced halfway through the book—a horror element that I absolutely loved—is resolved way too easily. But I get it, it’s the end of the series and there isn’t time for a lengthy resolution.
Reading Uncharted Hearts has truly been a fantastic experience, and I cannot wait to see what Constance Fay writes next!
Big thanks to the author for providing a review copy.
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