Not my cup of tea, unfortunately but I did finish though so will watch for more from this author & try again. Thanks to Netgalley for this ARC

Rosie Lachlan received the heart of Daphne Thorne, wife of local celebrity author Morgan Thorne. The transplant occurred after a relationship breakup. So, when the pair begin an anonymous communication through the donor service, I thought they were developing a friendship. But no one in this book is who they seem to be. Until the end, I wasn't sure who was "good" and "bad."
I loved all the surprises, twists and turns! I was kept guessing until the very end. Even though I guessed at some of the outcomes, I was still surprised many times as I read.
The book contains some graphic sexual content and profanity.

Cross My Heart by Megan Collins is a fast-paced psychological thriller that delves into obsession, identity, and trust through the story of Rosie Lachlan, a heart transplant recipient who becomes fixated on the donor’s widower, a famous author. The novel skillfully blends emotional depth with suspense, keeping readers guessing about the truth behind the donor’s death and Rosie’s growing obsession.

Collins creates a complex and flawed protagonist in Rosie, whose yearning for love and connection drives much of the narrative tension. The twists and turns maintain intrigue, though some readers may find Rosie’s behavior frustratingly obsessive at times. The book balances dark, unsettling moments with sharp pacing and emotional complexity, making it a compelling thriller for fans of intense, character-driven psychological suspense.

Overall, Cross My Heart is an addictive read that explores the lengths people go for love and the blurred lines between devotion and obsession.

I absolutely enjoyed this book so thank you for the ARC. I was not expecting some of the twists and turns. Megan Collins continues to give me the shivers!

A smart thriller that’s a cut above the norm—this one plays with unreliable narration in a way that delights this reader’s heart. I’m a sucker for a good unreliable narrator written convincingly (a hard task!) And the twists—I didn’t see them coming, not for a second. Add in tons of Taylor Swift references and a literary bent, and it’s safe to say this is one of my favorite thrillers of the year.

Thank you to Atria Books and NetGalley for this ARC in exchange for an honest review!

Congratulations! You've found the best thriller of 2025! Cross My Heart by Megan Collins is an absolutely unputdownable domestic thriller that will have you gasping in shock. The story revolves around Rosie, who works in a bridal salon after her own wedding was unexpectedly canceled. She helps other brides find their happily-ever-after weddings while desperately yearning for her own. A year, she was the recipient of a donated heart, and she begins to correspond with the husband/widow of the woman whose heart she received. Is this her second chance at love, or did this man have something to do with his wife's death?

Overall, Cross My Heart is a twist-filled book that will appeal to fans of HBO's The Flight Attendant and Netflix's The Staircase, with a dash of Netflix's You. One highlight of this book were the many twists. I literally could not put this book down because I was so engrossed in the story. Another highlight of the book were the poems written by one of the characters in the book and the main character's analysis. They really show that Megan Collins can write! She can even write love poems full of hidden meanings. Even though I have been a fan of the author since The Family Plot, I was shocked by how well-written this book was. While I was in the middle of the book, I knew that this book was a contender for the best thriller of 2025! Now that 2025 is half over, I have a feeling that this book is actually the best thriller of 2025. If you're intrigued by the synopsis above, or if you're a fan of thrillers in general, you won't regret checking out this book, which is available now!

This book pulled me in from the very beginning. The writing itself was beautifully done, and the characters were definitely intriguing. I really enjoyed the story being told through email exchanges in the beginning and how it immediately started building the tension. I was pretty sure I had things figured out about halfway through, but things went off the rails and the story completely changed to something I never could have imagined. I liked that there were twists and turns all throughout the book that kept me guessing, which kept me from wanting to put the book down! I honestly just really like everything this book had to offer, and will definitely be recommending it to anyone who loves a thriller!

This was told by Rosie, as well as email exchanges. Rosie was an interesting character to be in the mind of, but I got a lot of second hand embarrassment with her stalkerish ways. I was conflicted with her character because I empathized with her health issues, but at the same time I wanted her to dial back her delusions. Morgan was narcissistic, and after a few of their first exchanges, I did not care for him.

As the book went on, none of these characters were likable at all, and I wanted the first half of the book to speed up a bit. I found Rosie and Morgan’s exchanges a bit repetitive, and I wanted the mystery to unfold without witnessing the exchanges between the two. I did like the way there were emails and text threads, I felt like I was peeking over the characters shoulders reading private conversations. Two of the twists did take me by surprise, but when it was all said and done, I feel like the conclusion was a bit far fetched and that changed my overall rating.

Many thanks to Netgalley and the publisher for the opportunity to review this eARC. All opinions are my own.

This was an enjoyable reading experience.

I’m usually willing to suspend disbelief for a good psychological thriller, but this one went too far for my liking. Some of the plot points strained credibility, and the ending seemed forced. I think other people might enjoy it more than I did, so if the synopsis appeals to you, give it a try.

I don't want to read books written by anti-semitic authors. I won't be requesting galleys of her books in the future.

I have such conflicting feelings on this book. I very much disliked the first 60% of this book. Like I started this book in April and FINALLY finished it. After the 60% mark I started to enjoy it a lot more.

The main character was absolutely insufferable for me. I hated the way she spoke, thought, and acted. Seriously, I have never disliked a book character so much. She was so cringey and unrealistic about everything.

Now, once we hit the 60% mark it really picked up and was thrilling, surprising, and twisty. I thought I had pegged the villian but was pleasantly suprised at the end. The last 40% really bumped up this book's rating for me and I would say that's pretty impressive to go from maybe rating a book 1 star to the last part of the book making it go to a 5 star!

I'm really glad I didn't end up DNFing this book.

This was interesting to a degree but the characters were unlikable in a way that wasn't fun to read.

The obsession, delulu, stalker, YOU vibes were blended in nicely and my most enjoyable part of the story. I just wished all the other unnecessary faff wasn’t included so I could rate it much higher.

Ok, this book was WILD, and I do mean WILD. So twisty, so bizarre, so actually sort of maybe believable? Seriously, I have been reading in fits and starts lately, much to my dismay, but this one would grab me for long chunks of pages and keep me interested for longer than I can usually sit still. Megan Collins is just amazing, definitely an auto read author.

I jumped right in with this one without reading the synopsis and had so much fun guessing the twists. It had such a unique plot, and had me turning the pages in one sitting.

Rosie is the recipient of a donor heart that she becomes obsessed with to know more. She discovers it has come from a man’s wife who was a writer, and dives into a mission to find out her cause of death and what happened.

I enjoyed both the print and audio format for a full immersive read!

*many thanks to Atria and S&S audio/Netgalley for the gifted copy for review

Cross My Heart was a beautifully emotional and heartfelt story that really moved me. Megan Collins writes with such sensitivity, exploring themes of love, loss, and healing in a way that felt genuine and touching. The characters were well-developed and their journeys felt authentic and inspiring. It was a powerful, uplifting read that stayed with me long after I finished.

𝙈𝙮 𝙧𝙖𝙩𝙞𝙣𝙜: ⭐️⭐️⭐️⭐️

𝙈𝙮 𝙩𝙝𝙤𝙪𝙜𝙝𝙩𝙨:

Megan Collins knows exactly how to write women navigating impossible choices—grief-stricken, protective, and deeply human. Cross My Heart had me hooked from the first chapter, pulling me into a layered mystery wrapped around sisterhood, guilt, and the heavy weight of shared trauma.

I loved how dark and emotionally charged this was, with just the right amount of slow-burn tension. The twists surprised me, but more than that, I was invested in the characters’ why. The relationship between Sasha and her chosen family felt raw and real, and watching everything unravel was both gripping and heartbreaking.

Why not five stars? There were a few pacing lulls in the middle where I felt slightly ahead of the reveals, but the final act made up for it in spades. The emotional payoff was worth the build.

This is a twisty, thoughtful thriller about what we’ll do to protect each other—and what happens when that loyalty starts to crack.

Thank you to NetGalley, Atria Books, and Megan Collins for the advanced copy in exchange for my honest review.

Cross My Heart is available now!

A delicious unsettling psychological thriller that is filled with obsession,grief, and identity. There is also romantic delusion with secrets. A page turner!
Many thanks to Atria and to Netgalley for providing me with a galley in exchange for my honest opinion.

This was such an interesting page-turner. The main character was really fascinating and I loved the pacing and twists. Really well done.