Cover of The Poison Daughter

The Poison Daughter

by Sheila Masterson

4.6
Published Oct 3, 2025

About this book

Harlow Carrenwell is the lethal secret weapon of Lunameade’s elite. Cursed with a kiss that brings immediate death, she serves her family as an assassin, quietly eliminating their political rivals while moonlighting as a vigilante for the city’s vulnerable. She is a widow by design and a predator by nature, until she encounters the one man her poison cannot kill: her new betrothed, Henry Havenwood.

When Henry survives her lethal touch, he gains the ultimate leverage. Rather than exposing her, he traps Harlow in his remote mountain fortress, effectively severing her ties to the city she protects. Forced into a marriage with a man who knows exactly what she is, Harlow must navigate a dangerous game of cat and mouse.

Surrounded by vampire-infested woods and a husband whose motives remain dangerously opaque, she realizes that the only way to survive—and to uncover the Havenwood family’s true agenda—is to dismantle his defenses from the inside. In this high-stakes dance of power and deception, Harlow discovers that the most terrifying trap isn’t his fortress, but the possibility that her greatest enemy might be the only person who truly sees her.

Available Formats

Paperback: $9.99 Kindle: $0.00

What readers are saying

Stacyela

Standalone Romantasy of the Year Contender

"The Poison Daughter is, without question, one of the best romantasy standalones I have ever read and I don't say that lightly. Masterson constructs this story in layers, and I mean layers. Every time I thought I was finally getting an answer, the narrative peeled back to reveal yet another question lurking beneath. I'm someone who almost always has theories running in the background as I read, picking up threads, anticipating reveals, and this book completely dismantled that habit. The mystery woven throughout is so expertly crafted that I had zero ability to predict where anything was heading. Genuinely, refreshingly, delightfully stumped the entire time. Can we also talk about how good it is to read about characters in their 30s? Harlow and Henry aren't wide-eyed newcomers stumbling into their feelings. They are emotionally complex, carrying real damage, and they've turned that trauma into something fierce and powerful. They're both undeniably badass in a way that only comes from people who've been through it and chose to keep moving forward. And the banter. Chef's kiss. Henry and Harlow have the kind of electric, witty dynamic that makes you slow down just to savor the dialogue. It never feels forced and it crackles because these two characters are so well developed that every exchange feels completely natural. This is the kind of book you press into someone's hands and say: "just trust me." ["

May 19, 2026 Verified Purchase
Val

Wow!!

"Wow! I had no idea what to expect with this book, as I jumped on the bandwagon to read it. Harlow uses her poison kiss to kill men who are abusive. She is the ideal vigilante. If you want the perfect dark fantasy romance standalone, this is your book! Harlow's family is at the top of the magic wealth food chain. Although, they don't know everything about her skills. They also use her as a pawn in their politics. I love her backbone! Secrets are favored and manipulation runs rampant the entire book. Watch your back! Whew, the door to the spice is WIDE open! It is definitely not closed! While the world building can feel a little slow at times, keep pushing through. You will crave more Harlow and Henry and want to dive deeper into their story. The book could benefit from being condensed. I really enjoyed the playful back and forth between Harlow and Henry. The cat and mouse dynamic kept things interesting, and I found it fun to piece together their strategies as they tried to outsmart and outmanipulate each other. I thoroughly enjoyed the story and found myself completely absorbed in it. Please check the triggers. I will definitely be picking up another book by Sheila! "You're never alone in your pain." She's going to run from me. "Harlow, don't." My heart kicks up, blood pounding in my ears. Her eyes light with mischief. "Why not?" I grab her arm. "Don't ever run from me." For a moment, she's frozen there, her eyes far away and then, focused, and she looks murderous as she yanks her arm away. "Why?" "Because I'll chase you." "Nothing is beneath me. I will get as low and dirty as I need to in order to get what I want." "Just be sure that you're the fire and not the one being burned." "To err is human. To avenge is Divine." "But now I see that love is not letting the person you care for be caught with their guard down. Love is someone who helps you put your armor on, who knows how and when to help you take it off." ["

February 10, 2026 Verified Purchase
Leah M. Woods

5⭐ Worth the Hype

"5⭐ This was an EXCELLENT read! I haven’t had a fantasy novel hook me like this in a long time. And it’s a standalone with MCs in their 30s! We have an interesting magic system, lots of family secrets & betrayal, political intrigue, a good plot and perfect true enemies to lovers with great banter that had me laughing and swooning both. I love a strong FMC and Harlow is a baddy! I love her prickly nature but she has to be that way given how she was raised. Henry was a good MMC too. He’s broody, quiet and is an observer. I loved watching him go from being revengeful to really seeing Harlow for who she is and then wanting to protect her. AND THE CHASE SCENE!!! HOLY SMOKES that was ho ["

May 4, 2026 Verified Purchase
Alexander Pike

Well

"I love stories where the author is pretty clearly giving voice to some personally-held rage. The results aren’t always good, per se, but they’re usually enthralling in a way that other, more deliberately-constructed books can’t be. If you’ll permit me an incredibly minor spoiler, the female lead is a serial killer who exclusively targets abusive men. Some characters express surprise at learning this information. Not one person ever suggests that what she’s doing is wrong. So, it’s that kind of book. It’s a lot more, though. There’s an attention to detail in the world building and the character relationships that I really appreciated. Nuance is -everywhere-, and the author goes especially far out of her way to avoid simplifying -anything- down to a binary good/bad judgment. It’s always mixed, and messy, and complicated, because the kinds of problems that create heinously awful people and societies in the real world are complicated and messy, and can’t just be punched in the face by someone with a rugged jaw and bad-boy energy. Speaking of male romantic leads, though, this has -also- got some excellent dark romance vibes. The guy telling the girl not to run away from him because he likes to hunt is an absolute cliche at this point, but Henry is the first character I’ve read in a hot minute who I actually believed when it was his turn to get all growly and masculine. He and Harper have a delightful dynamic where both of them seem to think they’re playing a game of chicken that they refuse to lose, and, oh my God, you beautiful dorks, you are obviously -not-. So, yeah. This book took me by surprise. It’s heavy, it’s way realer than you might want in your escapism, and it can sometimes -hurt- to read. But also, oh, man, this one hit good for me. ["

April 4, 2026 Verified Purchase

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