The Crown of Moonlight

She’s the Scottish Highlander who saves his life with forbidden magic. He’s the immortal stranger who falls first—one healing touch, one fierce kindness at a time.

Flora Domhnall is the last of her line: a healer, a strategist, her Highland clan’s only defence in a war neither side can win. When she finds a dying immortal warrior in her woods, saving him is a terrible risk. But if he dies on her land, her clan will pay the price.

Her choice binds her fate to his.

Chyr has spent four centuries chained by the oaths carved into his flesh—oaths that read his every thought. Violence and honour are all he knows, and Flora’s brave, impossible mercy breaks him open.

Hunted across the burning Highlands, they can rely only on each other. The longing grows with every mile they share a saddle, every sacrifice made in silence, and every night they guard each other in the dark.

He’s hopelessly fallen. She’s fighting not to fall.

Then the ancient sovereignty magic of the Cailleach Queens awakens in Flora—and marks her as something the world hasn’t seen in four hundred years.

And Chyr’s oaths may demand he destroy the one person he can’t bear to lose.

For her, he’ll try to break his oaths. Even if it kills him.

From award-winning author Martina Boone, The Crown of Moonlight is a mythic Celtic romantasy perfect for readers who love the sweeping historical romance of Diana Gabaldon’s Outlander and the dark, aching magic of Rachel Gillig’s One Dark Window.

★ EARLY PRAISE ★

“I COULD NOT STOP reading. The slow burn! THE TENSION! THE YEARNING!! The romance was just so good I was on the floor. The Scottish lore is incredible and the world building sublime.” —BookTok Reviewer

“As a massive fan of Outlander, I went into this story hoping for a touch of sweeping romance, aching emotion, and lush world-building—and I was not disappointed…the same sense of fate-touched love, and that slow, simmering tension between two characters who feel destined for each other.” —ARC Reviewer

“The land and the world itself feel like another character in the story. The romance reminded me of Rebecca Ross’s writing—it’s soul-deep, human, and emotional, and I loved it.” —ARC Reviewer

★ A SCOTTISH HISTORICAL ROMANTIC FANTASY ★

✨ Emotionally dangerous slow-burn romance ✨ Mythic fantasy grounded in Jacobite-inspired history ✨ An immortal warrior chained by magical oaths who falls first and hard ✨ A fierce, strategic heroine with agency and power ✨ Forgotten queens, god-forged crowns, and a contested throne ✨ A shared journey through the war-torn Scottish Highlands ✨ Emotional yearning and hard-won explicit intimacy✨ Ancient sovereignty magic and Celtic mythology ✨ Shadow companions and original creatures ✨ Dual POV (mortal + immortal perspectives) ✨ Atmospheric Celtic historical romantic fantasy ✨ One epic love story—no love triangle

Book One of The Five Crowns series.

Contains explicit intimate scenes and violence in the context of war. Please check warnings. Uses UK English spelling and light Highland dialect suggestive of Jacobite Scotland.

Buy it now, or read a sample chapter.

What Readers Say

"This book slowly crawled its way to becoming one of my top reads of 2025!! I COULD NOT STOP reading this book last night. The SLOW burn! THE TENSION! THE YEARNING!! "

— Tata.Lifepages

"One of the best books I've read this year! Set in a Celtic fantasy world inspired by Scottish history, this epic fantasy romance is absolutely amazing. Martina Boone's descriptions of the hauntingly beautiful highlands are lyrical and vivid…Flora is such an inspiring main character: resilient, wise, courageous. I love her deep connection to animals, the land, and the elements, as well as her kind heart."

— Forest Crone Books

"As a massive fan of Outlander, I went into this story hoping for a touch of sweeping romance, aching emotion, and lush world-building — and I was not disappointed. In fact, the similarities were uncanny in the best possible way. There’s the same richness of setting, the same sense of fate-touched love, and that slow, simmering tension between two characters who feel destined for each other, even as the world threatens to pull them apart."

— Lilith's Library

"You can’t help but admire these two great main characters. They both have all the qualities I would wish for in a strong story line like this. Compassionate, strong, fierce and loyal with a deep connection to each other that matters, but they also have plenty of conflicted emotions and loyalties that may not align that they both must navigate. The depth of writing makes these characters feel like they will jump right off the page at you."

— Maui Reader

"An immersive fantasy for readers who love magic, history, and aching romance. Perfect for fans of Sarah A. Parker and Rachel Gillig. If you love stories where courage and desire collide against impossible odds, this one belongs on your shelf."

— Librarian/Netgalley Review

"This book was such a breath of fresh air. I fell in love with the world and the main characters, Flora and Chyr, within the first two chapters. Chyr is the perfect mix of morally gray and golden retriever energy—with plenty of “touch her and die” vibes! Meanwhile, Flora is a strong yet soft FMC, learning her magic and its power as she goes…they’re just meant for each other, and it’s beautiful. I was squealing and kicking my feet the entire time! I’ll be thinking about Flora, Chyr, and this magical world for a long time to come."

— Hannah Dreams Books

"Every scene felt cinematic, wrapped in moonlight and mystery. The romance is gorgeously written — slow-burn, emotionally layered, and incredibly satisfying. The characters are real, raw, and beautifully flawed. Their journey is not just one of love, but of healing, trust, and transformation. "

— ARC Reader Dayna

"Lyrical without losing momentum, pulling you deeper into a world of moonlit forests, cursed crowns, and political intrigue that keeps the stakes constantly rising. The twists are smart and satisfying, the lore is rich, and the slow-build mystery surrounding the Five Crowns adds irresistible depth. Utterly absorbing."

— Librarian/Netgalley Review

"Atmospheric, romantic, and utterly absorbing, The Crown of Moonlight is the kind of fantasy you sink into and don't want to climb back out of. A captivating beginning to a series that promises even more magic and danger to come."

— Librarian/Netgalley Review

"A beautifully imagined fantasy that blends magic, mystery, and romance into an enchanting opening for The Five Crowns series. Martina Boone crafts a world that feels both ancient and alive, full of shimmering enchantments, dangerous secrets, and a royal legacy that refuses to stay buried."

— Librarian/Netgalley Review

"I didn't expect a Highland fantasy to feel this haunting and tender, but The Crown of Moonlight swept me away. Boone gives us Flora Domhnall, a courageous woman caught between loyalty to her clan and the dangerous pull of an immortal warrior...a slow-burn romance wrapped in rich history and magic."

— Librarian/Netgalley Review

"The heroine is instantly compelling—strong yet vulnerable, torn between duty and desire, and determined to uncover the truth even when it puts her in the path of danger. The relationships are layered with tension and emotion, and the romantic chemistry crackles through every shared glance and whispered secret."

— Librarian/Netgalley Review

"Boone’s prose feels both timeless and cinematic—windswept moors, crumbling castles, and an undercurrent of old-world magic that hums through every scene. The dual POV structure adds depth, letting readers feel both the mortal cost of Flora’s courage and the immortal ache of Chyr’s duty. Their chemistry is beautifully rendered—equal parts tenderness and turmoil—never rushed, always earned. Boone deftly weaves themes of honor, sacrifice, and destiny into a narrative that’s as romantic as it is epic. Fans of A Court of Thorns and Roses, Outlander, or The Cruel Prince will feel right at home—but Five Crowns stands proudly on its own."

— ARC Reader Lisa

"Lush and atmospheric, weaving together Highland landscapes, fae sorcery, and political intrigue with a slow-burn romance that feels both inevitable and heartbreaking...The Highlands are painted with haunting beauty, the fae rebellion pulses with danger, and the chemistry between Flora and Chyr builds with delicious tension...For readers who crave romantasy with grit, passion, and mythic resonance, The Crown of Moonlight delivers in spades."

— Netgalley Review

"This book was so much more than I expected in all the right ways. It tore my heart apart and stitched it back together too many times to count. The Crown of Moonlight covers grief, love, lust, hope, rage, morals, values, ethics, and everything in between. There were two scenes in this book that had me put the book down and stare off into the abyss and even though it’s usually caused by heartbreak I love when a book makes me do that."

— ARC Reader Samantha

"I immediately started getting lost in this book, and it was a struggle to force myself to stop... Introduced me to a world I didn't even realize I needed."

— ARC Reader Tash

"I haven't read a book that I can confidently rate 5 stars in a bit! I got to get my hands on a copy of Crown of Moonlight as an ARC and I loved every second of it! "

— ARC Reader Shelby

"If you love star-crossed romance and heroines who deserve their power, you'll love TCoM ♥"

— ARC Reader Nora

"Wow... The story is beautifully revealed but it's the chemistry between Flora and Chyr that kept me engaged. She is a fragile human, but her heart is mighty, even when her self-doubt and fear keep her on pins and needles. Chyr admires her strength, as any intelligent man should, and protects her well-being and choices even when he realizes her destiny is a dangerous one. The slow burn romance is very well-executed."

— ARC Reader Sumi

"I gobbled this up! The Celtic back drop allows for a unique feel to the ever popular romantacy genre. This was an immersive experience due to the wonderful world building, awesome character development, and a magic system that is easy to understand and feels unique."

— ARC Reader Nikkiya