LLMBooks Publishing
The Darkest Oath
The Darkest Oath
A saga of yearning, rebellion, and immortal consequence
⭐⭐⭐⭐⭐ 4.7
Her love is his only salvation—
and the undoing of everything he needed to survive.
He was meant to die a knight.
Instead, he lives—cursed, eternal, and forbidden to love.
Now, in the shadows of the crumbling kingdom of France,
one woman may be his salvation…
or the reason he falls.
Not all life is living.
Not all oaths are holy.
Slow-burn. Closed-door.
Bleeds with loyalty, aches with love.
The curse is real. The love is forbidden.
The oath was only the beginning.
Take the Oath. Choose the Curse.
Step into a world where love is treason and every vow carries a price.
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Main Tropes and Themes
- Political Intrigue
- Forbidden Love
- Tragic Rose
- Slow-Burn Romance
- Betrayal & Vengeance
- Beauty & the Beast Vibes
- Love & Redemption
- War & Rebellion
- Scars & Sacrifice
What is this story about?
What is this story about?
An immortal knight. A fearless rebel. A love forged in the fires of war.
Chevalier Rollant de Montvieux was once a man of honor. Betrayed on the battlefield and bound by a sorceress’ curse, he has spent six centuries serving the French crown—immortal, untouchable, and doomed to lose anyone he dares to embrace in love. As revolution smolders in the streets of Paris, Rollant clings to duty as his only purpose in his wretched existence—until he meets her.
Élise has nothing left to lose. Defiant, outspoken, and determined to fight for a future free from tyranny, she has no patience for kings—or the loyal dogs who serve them. But when she crosses paths with Rollant in a spy’s disguise, she senses something different beneath his quiet strength—a man burdened by secrets, trapped in a fate not of his choosing.
Drawn together by forces neither can control, their connection deepens in the shadows of a crumbling world. But Rollant knows love is forbidden to him. To hold Élise is to curse her to certain death.
As France teeters on the edge of war, Rollant must make an impossible choice: honor his unbreakable oath and protect her from afar, or risk everything—including her life—for one fleeting chance at love. And Élise must decide where her true battle lies: in the streets, fighting for freedom, or in the arms of a man who may be her ruin—or her greatest salvation.
Who is this story for?
Who is this story for?
For readers who love slow-burn, closed-door forbidden romance and gothic historical fantasy, The Darkest Oath weaves echoes of Beauty and the Beast into a sweeping tale of sacrifice, love, and redemption set in the dark underbelly of the French Revolution, where love itself may be the deadliest betrayal.
Content Disclaimers
Content Disclaimers
BookCave Content Rating:
Moderate with Community Content Elements / Themes, including:
-- closed-door romance
-- violence - assault, abuse, executions
Author Rating:
The author rated this book for ages 14+ for violence, closed-door romance, and adult themes.
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“This story grabs you from the first sentence and doesn't let go. Be prepared for realistic displays of emotions, actions and dialogue. I've never been disappointed by any book by this author in the past and can happily say this book lives up to that.”
“Absolutely stunning story dripping with history. A turn from her Egyptian stories, and fantastically done. The love that ignited at the beginning continued throughout. I felt every feeling that went into the warmth, tragedy, and embrace of love.”
“There are slow burn romances and then there's The Darkest Oath. This was the first book I've read by Ms Merewether, and it was worth every moment.”
“A witty story that is very haunting, heart wrenching and entertaining, filled with interesting complex characters, this unpredictable tear jerker will have you turning the pages and not want to put the book down.”
“Rollant de Montvieux was an exemplary knight who prided himself on his honor. An unexpected betrayal on the battlefield left him dying and frantic about the fate of his loved ones.”
“What would you do if you are offering salvation by becoming immortal but only if you swear an oath to protect the king of France in perpetuity? Would you take it? And when you do and you avenged your killer by killing him you get cursed by killing you”
“The Darkest Oath surprised me in the best way. I went in expecting a slow burn romance with a bit of historical flair, but what I got was something much deeper—quietly powerful, emotionally rich, and full of tension that lingers.”
“What if you were cursed to never know touch love and be forced to serve royalty forever? That’s the question Rollant faced when he made an oath to live (not a spoiler… it’s in the first few chapters).”
“What a charming, poignant and heart-wrenching story about an immortal man doomed to never experience love as the price for his immortality. I was swept up from the beginning into Rollant’s story skillfully set in the waning days of Louis XVI’s reign.”
“This book deserves a lot of hype and more. The book follows Rollant, a knight from the Second Crusade. As Rollant lays dying on a battlefield, a sorceress offers him immortality for a price, eternal service to the French Crown.”
“The Darkest Oath will keep you up all night turning pages to learn what comes next. The tension keeps building and you have to know the whole story as quickly as possible. If you love Les Mis you will love this book.”
“Have a tissue handy on the three days (or two very long ones) that you set aside for this dark, epic, emotionally intense, closed door second-chance, historical paranormal, supernatural, thriller, urban fantasy, forbidden romantic MUST READ of the legendary Rollant de Montvieux.”
“My favorite quote from the book: Sometimes the hardest choice is to stop returning to the same hurt.”

A Look into Chapter One
Click to Read
Siege of Damascus, Levant, 1148 “Do you wish to live, Rollant?” An ethereal whisper wove through the din of battle, cutting through the clash of steel and the cries of the dying. The whisper tickled Rollant’s ears like a wisp of wind carrying words not meant for the living. Rollant moaned through strained breaths and shattered lungs. “Angel of death, take your enemy,” he rasped with unfocused eyes, searching the skies for God’s messenger. He assumed the origin of the whisper was divine—a sign from the heavens. But only fallen bodies strewn across the blood-soaked ground were in sight. His gaze, blurred by the edge of death, drifted to the silhouette of Arnoul, his brother-in-arms, looming over him. The cries of the Saracen enemies echoed in the distance but faded to the slowing heartbeat in his ears. Rollant grasped at the fragments of the past moments, trying to piece together the fatal betrayal and pleading with God on why He let him fall to Arnoul’s blade. Arnoul, the man who had shared his food, his cot, his horse—the long years spent training, fighting, and saving each other—he was the one who struck him down? Rollant’s mail-clad fingers, clumsy and weak, drifted toward the wound on his neck. Blood poured warm against his chainmail coif. Breath and blood warred within him—both desperate to escape his broken body. “Forgive me, old friend,” Arnoul muttered softly, though too soft for the weight of his sin. He wiped his blade clean with Rollant’s surcoat, the sacred white stained red. “But your lands, your title—they were ever meant to be mine.” Rollant wanted to scream, but his voice failed him. Life fled from him as the sun perched as a bloodied halo above the walls of Damascus. The ruddy sunlight cascaded onto the once-proud Crusader banners, now torn, ragged, and scorched by fire. The frayed threads fluttered in the smoky air as a last stand for God and the Holy Lands. Memories of his beloved wife and precious daughter flashed before his eyes. Amée’s gentle touch warmed his cheek, and her laughter echoed in their home tucked away in the Chartreuse mountains outside of Lyon, France. Cateline’s tiny hand reached for his to walk by his side in their garden. Dread far deeper than the pain in his flesh pierced his heart at the thought of leaving them with traitors such as Arnoul. “Do you wish to live?” The whisper came again, clearer this time—a woman’s voice, cold and thin. Not a messenger of God. Rollant pushed through the blurry vision and focused on Arnoul’s voice that planted him in the brutal present. “Do you wonder why I have cut you down?” Arnoul shook his head and gritted his teeth. Rollant gasped for air but narrowed his eyes in hatred. Arnoul nodded. “A knight as brave as you deserves an answer.” He leaned upon his heavy, engraved sword. “Our noble King Louis the Young sees you alone in all things. He has refused to favor the rest of us. Too much glory upon your head. Too much favor from the king.” Arnoul’s words wavered as though he struggled with what he’d done, but his eyes remained steady. He lifted his boot from Rollant’s crushed hand, the bones broken and useless from Rollant’s last desperate attempt to defend himself. “God have mercy on my soul; His will be done,” Arnoul murmured. “But life shall be better without you to claim all the King’s favor. For now, I may have a chance to cause the King’s eyes to shine. For now, the King may greet me with a smile and remember my name.” Rollant stared in disgust at the man who had once been like a brother to him. Arnoul kneeled and placed a heavy hand alongside Rollant’s cheek—a cruel reminder of their false friendship and loyalty once shared on the battlefield. “Sorrow fills me, my friend. Be with our Lord, Rollant. I shall see that your wife and daughter be properly cared for, as is right.” A spew of venom desired to leap from Rollant’s tongue into the cursed man’s face. His lips twitched with words unsaid. How dare Arnoul, a traitor, a betrayer, speak of honor and care? The twisted sense of righteousness showcased Arnoul’s greed and decay. How had Rollant not seen through to the envy beneath his mask? A choked, blood-filled gasp flew over Rollant’s lips. Amée’s face, flawless in its memory, appeared before him. Pearl-white skin, her almond eyes gazing at him as they always had—full of love. He could almost hear her voice and feel the warmth of her hand in his. Cateline, too. She would grow into a woman without him. She would never again feel his arms around her in protection or love. If a Saracen had struck him down, he would have surrendered his soul to the Lord, finding peace in the knowledge his death was in God’s honor. But not like this—betrayed by a selfish, greedy act. He was a righteous warrior for the crown of France, and he deserved an honorable death! Arnoul mocked him and stole it all. Something feral surged in Rollant’s chest with a last, wretched pulse of life.Chapter 1 — The Chains of Vengeance
Praise for The Darkest Oath
-
★★★★★
"The Darkest Oath delivers a haunting Gothic tale set amid the blood-soaked streets of revolutionary France...
a captivating love story...a slow-burn romance that will keep the reader riveted to the story. I could not put it down.”
- Delene Vrey for Readers’ Favorite -
★★★★★
"What truly elevates The Darkest Oath is how it doesn’t shy away from the harsh realities of war, betrayal, and the heavy burden of love in a fractured world...
provocative and emotionally
stimulating...
Merewether has created a masterpiece.”
- Miche Arendse for Readers' Favorite -
★★★★★
"Merewether paints an emotional tug-of-war…
moments of tenderness in the turmoil of the revolution...
Merewether’s fabulous combination is a win.
Very highly recommended.”
- Jamie Michele for Readers’ Favorite
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Product Information
Paperback Size: 5" x 8"
490 pages
Printed on-demand by Lulu Direct
ePub File Size: 1.2 MB
Delivered by BookFunnel to Purchase Email
Publisher: LLMBooks Publishing
Published: July 2025
ISBN-13: 978-1-961759-26-8
Genre: Gothic Fantasy Historical Romance
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