The Flame in the Frost by Olivia Boothe

Title: The Flame in the Frost: A Northern Kindoms Novel

Author:  Olivia Boothe
Publisher: Three Brothers Press
Publication date: June 30, 2026
Pages: 
Source/format: e-ARC from Book Sirens
Rating: ☆☆☆☆

Synopsis (from goodreads.com):

When a cursed Winter Prince and a royal guard with a forgotten bloodline are bound by an ancient prophecy, they become the only ones who can stop a rising enemy—if their forbidden love doesn’t destroy them first.

They tried to silence their bond, but the gods had already sung their fate into the heavens.

In the frostbitten kingdom of Skadgard, Sylvanna Isenwulf has finally claimed her mantle as Captain of the Guard, but her loyalty to the crown is tested when Prince Jökullson “Jack” Drakmyr—her best friend and heir to the Frostbound throne—is forced into an arranged betrothal with a princess he’s never met and an alliance that could ignite war across the northern realms.

Ordered to accompany Jack on a dangerous envoy through the cursed Wildlands, Sylvanna is thrust into a perilous journey filled with ancient magic and deadly creatures. But it is another kind of danger that threatens to unravel their friendship...

Bound by an invisible tether that has pulled at their hearts since childhood, Sylvanna and Jack must not only confront their deepest secrets and darkest desires but choose between the love consuming them at their core or the duty binding them to their kingdom.

And when a ruthless enemy rises, threatening to tear Sylvanna and Jack apart, The Frost Prince must decide to either honor the crown that has caged him his whole life or unleash the deadly monster dormant in his veins—a winter storm fiercer than anything Skadgard has ever faced.

Enough to topple kingdoms. Enough to shatter fate.

The Flame in the Frost is a Norse-inspired Friends to Lovers Jack Frost reimagining romantasy intended for readers 18+. Reader discretion is advised.

M Y  T H O U G H T S

The Flame in the Frost by Olivia Boothe is the first book in the Northern Kingdom series. This novel is a Jack Frost inspired and is written in dual POVs between the royal fae, Jack, Prince Jökullson Drakmyr, and common fae, Sylvanna Isenwulf, also known as Sylvi. In The Flame in the Frost, only royal fae are bestowed with magic. Jack is a fae prince imbued with ice magic and unseelie magic. 21-year-old Sylvi, is Frostbound Court's captain of the royal guard. She is best friends with Jack. Both are fated mates but their love is considered forbidden in their realm.

Sylvi met Jack when she was 7-years-old. Her father was captain of the guard back in the day and brought young Sylvi to the palace to witness the magic of the queen during a celebration for the first snow of the season. When she was lost in the Grove of Whispers, a labyrinth like maze, a shimmering whisp beckoned young Sylvi into the labyrinth and she found Jack in the middle. The light guided her to him. Every since that day, they have been inseparable. 

The Flame in the Frost is a lush and atmospheric high fantasy novel that is woven with lyrical prose. Boothe breathes life into inanimate objects and the writing amplifies the worldbuilding. Sylvi's and Jack's friendship grows over many years and develops into something more in this slow burning romance. Readers can definitely feel the yearning throughout the entire novel. However, Jack's mother, the Queen of Frost, forbids this relationship and arranges a marriage between Jack and Princess Isolde Kaldvalien in order to unite realms of Skadgard and Verrindor to forge an alliance in order to fight Yulereth.

I highly suggest this novel for readers who are looking for a Jack Frost reimagining story that intertwines the best friends to lovers trope in this spicy Romantasy. Jack and Sylvi's forbidden love is fire to the ice. I appreciate Boothe adding a glossary in the back for the novel so readers can further understand the realms and Nordic phrases. 

The Flame in the Frost touches on some of Nordveld (Seven Magical Northern Kingdoms) but I would love to see more characters from the other realms or to see Jack and Sylvi venture out to the other realms in future novels in the series. I want to immerse myself in the worldbuilding that Boothe has created since it's fantastic! This book definitely deserves more hype and for good reasons! I felt very emotionally invested in Jack and Sylvi as characters individually but also together as friends and lovers.

We know that Royal fae is bestowed with magic but what if common fae can wield magic as well? Jack and Sylvi are torn between their duties and their love for one another. How to they manage both? Do they chose one over another? Or does someone chose for them? Check out the Flame in the Frost to find out more!