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The Secret in Our Marriage: A completely addictive psychological thriller full of heart-racing twists
Not yet published
Expected 1 Jul 26354 pages, Kindle Edition
Expected publication July 1, 2026
About the author
Cathryn Grant
82 books435 followersCathryn is the author of over forty novels. She writes psychological thrillers, psychological suspense, and the ALEXANDRA MALLORY series which features a sociopath you can’t help but love. Readers say they're “absolutely addicted” to the series.
The things that cause torment in real life—obsession and revenge, guilt and envy and longing—are endlessly fascinating in fiction and she never grows tired of writing stories about characters struggling to overcome the worst.
Cathryn also writes ghost stories because who knows what lies beyond our senses—The Haunted Ship Trilogy and the Madison Keith series of novellas.
When she’s not writing, she’s usually reading, walking on the beach, or playing golf, going way out of her way to avoid hitting her ball in the sand or the water. She lives on the Central California Coast with her husband and her cat, Cleopatra.
You can get in touch with her by email, find her social media links, or sign up for her monthly newsletter at cathryngrant.com/contact. As a thank you for signing up, you’ll receive a free short story about Alexandra Mallory.
The things that cause torment in real life—obsession and revenge, guilt and envy and longing—are endlessly fascinating in fiction and she never grows tired of writing stories about characters struggling to overcome the worst.
Cathryn also writes ghost stories because who knows what lies beyond our senses—The Haunted Ship Trilogy and the Madison Keith series of novellas.
When she’s not writing, she’s usually reading, walking on the beach, or playing golf, going way out of her way to avoid hitting her ball in the sand or the water. She lives on the Central California Coast with her husband and her cat, Cleopatra.
You can get in touch with her by email, find her social media links, or sign up for her monthly newsletter at cathryngrant.com/contact. As a thank you for signing up, you’ll receive a free short story about Alexandra Mallory.
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Displaying 1 - 9 of 9 reviews
May 21, 2026
Enjoyed this book that had me turning the pages. Lots of secrets will come out. Different timelines, past mistakes, blackmail and decisions that make you question the motives.
Review of advance copy received from NetGalley
Cathryn Grant delivers a tense, addictive psychological thriller with The Secret in Our Marriage. From the very first chapter, I was completely hooked by the secrets, lies, and creeping sense that everything was about to fall apart. This was one of those books where I kept saying “just one more chapter” and suddenly hours had passed.
Avery and Nathan seem to have the perfect marriage on the surface, but beneath it are layers of deception and fear. When threatening messages begin arriving, exposing secrets Avery desperately wants hidden, the tension immediately ramps up. I loved the feeling of constantly questioning everyone’s motives and trying to figure out who could be trusted.
The short chapters and alternating timelines kept the story moving quickly, and every reveal added another layer to the mystery. Cathryn Grant does an excellent job building suspense slowly, letting the paranoia and pressure simmer until everything explodes. Just when I thought I had things figured out, another twist pulled me in a completely different direction.
What really worked for me was the atmosphere of unease throughout the entire book. The marriage dynamics felt toxic, emotional, and believable, and the constant secrets and manipulation made it impossible to stop reading. Avery frustrated me at times, but in the best possible way because I was so invested in what would happen to her.
This felt more like a dark domestic suspense than an over-the-top thriller, and I loved that about it. The emotional tension, hidden pasts, blackmail, and unraveling relationships kept me fully engaged from start to finish.
If you enjoy twisty domestic thrillers full of lies, betrayal, secrets, and unreliable characters, The Secret in Our Marriage is absolutely worth picking up. A gripping and entertaining read that kept me turning pages late into the night.
Thank you to NetGalley and Bookouture for the ARC in exchange for an honest review.
Avery and Nathan seem to have the perfect marriage on the surface, but beneath it are layers of deception and fear. When threatening messages begin arriving, exposing secrets Avery desperately wants hidden, the tension immediately ramps up. I loved the feeling of constantly questioning everyone’s motives and trying to figure out who could be trusted.
The short chapters and alternating timelines kept the story moving quickly, and every reveal added another layer to the mystery. Cathryn Grant does an excellent job building suspense slowly, letting the paranoia and pressure simmer until everything explodes. Just when I thought I had things figured out, another twist pulled me in a completely different direction.
What really worked for me was the atmosphere of unease throughout the entire book. The marriage dynamics felt toxic, emotional, and believable, and the constant secrets and manipulation made it impossible to stop reading. Avery frustrated me at times, but in the best possible way because I was so invested in what would happen to her.
This felt more like a dark domestic suspense than an over-the-top thriller, and I loved that about it. The emotional tension, hidden pasts, blackmail, and unraveling relationships kept me fully engaged from start to finish.
If you enjoy twisty domestic thrillers full of lies, betrayal, secrets, and unreliable characters, The Secret in Our Marriage is absolutely worth picking up. A gripping and entertaining read that kept me turning pages late into the night.
Thank you to NetGalley and Bookouture for the ARC in exchange for an honest review.
Review of advance copy received from NetGalley
Thank you to NetGalley and Bookouture for providing me with an ARC in exchange for an honest review.
This was a very easy thriller to get into from the start. The opening immediately pulled me in, and the short chapters kept the pacing fast enough that I constantly wanted to read “just one more.”
I also really enjoyed the different timelines throughout the story. Knowing that something had happened in the past, while slowly uncovering what actually went wrong, added a lot of suspense and kept me invested in the mystery.
I would say this feels more suspense-driven than twist-heavy. While there were a few reveals along the way, the tension and need to know how everything would unfold was what kept me turning the pages the most.
The main character definitely frustrated me at times because of some of the decisions she made, but in a way that still kept me emotionally involved in the story. I kept wanting to see what would happen next and how everything would come together in the end.
Overall, this was a fast and engaging thriller that kept me curious from beginning to end.
This was a very easy thriller to get into from the start. The opening immediately pulled me in, and the short chapters kept the pacing fast enough that I constantly wanted to read “just one more.”
I also really enjoyed the different timelines throughout the story. Knowing that something had happened in the past, while slowly uncovering what actually went wrong, added a lot of suspense and kept me invested in the mystery.
I would say this feels more suspense-driven than twist-heavy. While there were a few reveals along the way, the tension and need to know how everything would unfold was what kept me turning the pages the most.
The main character definitely frustrated me at times because of some of the decisions she made, but in a way that still kept me emotionally involved in the story. I kept wanting to see what would happen next and how everything would come together in the end.
Overall, this was a fast and engaging thriller that kept me curious from beginning to end.
Review of advance copy received from NetGalley
"The Secret In Our Marriage" is a masterclass in domestic suspense, and I enthusiastically award it a 5-star rating. This book delivers everything a thriller fan could ask for: a deeply unsettling central mystery and a secret so stunning, it is absolutely jaw-dropping. The tension is ratcheted up immediately as an unknown texter begins threatening to expose a hidden truth that could shatter the main characters' lives.
Structurally, the book is designed to be impossible to put down. The short, punchy chapters make it a true page-turner, propelling the narrative forward at a relentless pace. The author expertly utilizes a dual timeline format, weaving together pivotal events from the characters' teen years with the escalating crisis of the present day. This structure effectively draws you in, layering suspense and shocking revelations until the final, thrilling conclusion.
If you are looking for a suspenseful read that will keep you guessing until the very end, I definitely recommend picking up this title.
Thank you to #NetGalley for providing the Advance Reader Copy (ARC) of this unforgettable read.
Structurally, the book is designed to be impossible to put down. The short, punchy chapters make it a true page-turner, propelling the narrative forward at a relentless pace. The author expertly utilizes a dual timeline format, weaving together pivotal events from the characters' teen years with the escalating crisis of the present day. This structure effectively draws you in, layering suspense and shocking revelations until the final, thrilling conclusion.
If you are looking for a suspenseful read that will keep you guessing until the very end, I definitely recommend picking up this title.
Thank you to #NetGalley for providing the Advance Reader Copy (ARC) of this unforgettable read.
Review of advance copy received from Netgalley
Thank you so much netgalley and Bookouture for this ARC
JAW ON THE FLOOR.
4.25⭐️
This is one of the best thrillers I've read in a long time. The plot twist had me gasping.
This book was truly thrilling my heart was beating out of my chest i could not put it down. I had me up until 12 am in the morning reading. I definitely recommend.❤️
Avery was a character i didnt really like in the beginning but in the end she had me rooting for her. Her marriage with Nathan was such a beautiful thing you could definitely feel their love and it heightened the stakes even more.
Nathan was my favorite character in the book, he was just a sweetheart and I understood him sooo well.
JAW ON THE FLOOR.
4.25⭐️
This is one of the best thrillers I've read in a long time. The plot twist had me gasping.
This book was truly thrilling my heart was beating out of my chest i could not put it down. I had me up until 12 am in the morning reading. I definitely recommend.❤️
Avery was a character i didnt really like in the beginning but in the end she had me rooting for her. Her marriage with Nathan was such a beautiful thing you could definitely feel their love and it heightened the stakes even more.
Nathan was my favorite character in the book, he was just a sweetheart and I understood him sooo well.
May 22, 2026
**3 Stars**
I really wanted to enjoy this book, but I just couldn’t fully connect with the characters. At times, their actions and conversations felt repetitive, which made the story drag for me in certain parts. None of the characters were very like able. But , the premise was intriguing, and there were enough suspenseful moments to keep me reading.
Thank you to NetGalley and Bookouture for the ARC in exchange for an honest review.
Book publication is July 31?.
I really wanted to enjoy this book, but I just couldn’t fully connect with the characters. At times, their actions and conversations felt repetitive, which made the story drag for me in certain parts. None of the characters were very like able. But , the premise was intriguing, and there were enough suspenseful moments to keep me reading.
Thank you to NetGalley and Bookouture for the ARC in exchange for an honest review.
Book publication is July 31?.
Review of advance copy received from Netgalley
Wow what an amazing brilliant book that totally sucks you in from the start. I couldn't put it down as the twists just kept coming. Its got to be one of my favourite books this year. Thank you for letting me read this early x
Review of advance copy received from NetGalley
his is a great thriller with lies and turns at every corner and with a dark twist in the tale that had my head spinning. This is about old friendships and secrets that should have stayed buried and two people desperate for their secrets to stay secret no matter what the cost! Don’t miss this one.
May 21, 2026
Fantastic read and hard to put down! Reminds me of Frieda McFadden.
Displaying 1 - 9 of 9 reviews