The Crimson Throne (Spy and Guardian, #1)

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81l+UUg4zpL
Age Range
14+
Release Date
October 07, 2025
ISBN
978-1464236136
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Powerless meets Reign in this new historical romantasy from the New York Times bestselling authors of Night of the Witch.
Samson Calthorpe's curse has isolated him from everyone he has ever cared about. So, when the opportunity arises to break the curse, he grabs it. All he has to do for his freedom is risk his life and become a royal spy, using every bit of the skills and resolve he's picked up on the streets of London to infiltrate the court of the Scottish Queen and uncover a plot to assassinate Queen Elizabeth.

For years, Alyth Graham has been protecting Mary Queen of Scots from threats both physical and magical, including the Queen's own husband, Lord Darnley. Alyth is more than meets the eye though, the child of a fae prince and a human mother, she is among the most powerful protectors in Scotland: guardians sworn to defend against the Red Caps, a bloodthirsty fae clan . . . that Lord Darnley is in league with to overtake Scotland.

As Alyth and Samson circle each other in the volatile and glamorous Scottish court, both seek to uncover threats to their own countries. They have one unifying link: their shared hatred and suspicion of Lord Darnley…and their undeniable pull towards each other. Using secret codes, hidden messages, and a little bit of magic, Alyth and Samson unravel a plot centuries in the making. Lord Darnley is only a pawn, and in this game, the queen takes all.

"A biting historical fantasy series launch that fuses Tudor-era courtcraft with Celtic fae legend... ...confronting duty, destiny, and betrayal" ―Publishers Weekly
"An atmospheric fantasy brimming with intrigue and heart." ―Kirkus Reviews

Editor review

1 review
enthralling YA historical romantic fantasy
(Updated: June 12, 2026)
Overall rating
 
5.0
Plot
 
5.0
Characters
 
5.0
Writing Style
 
5.0
Illustrations/Photos (if applicable)
 
N/A
THE CRIMSON THRONE is an enthralling YA romantic fantasy. Alyth is a Leth (part-fae) in 1500s Scotland. She has a particularly challenging job of maintaining the magical barrier around Scotland that protects both human and fae from the Red Caps, deadly and violence-driven magical beings. As part of her role in that, she is ingrained in the court of Mary, Queen of Scots, where she helps to protect her, particularly from her husband who uses Red Cap weapons to try to get rid of her and take her royal power.

Alyth is checking the border when she encounters another Red Cap weapon and finds a young man, Samson, who is trying to help. Samson is barely acknowledged by his father for his illegitimacy and has spent most of his life on the streets. However, he carries a curse that means he will blackout and cause horrible violence. His father has a new task for him that carries him into Scotland and takes him to Mary's court- where the item that cursed him is supposedly being held. If he is able to get that, the curse may be done.

As he travels into the court and gets to know Alyth, they will find their fates entangled and a common purpose will help them to forge ahead. With unexpected twists, their paths to saving Scotland will be anything but easy.

What I loved: This was an engaging historical reimagining that takes many facts about the past and weaves it with mythology. The historical elements seemed well-researched, and an author's note at the end helps to set the stage. The mythology was fantastically well-done with fae and magical creatures that really came to life through the telling. The story felt lush and full of magic with strong world and character-building.

The main characters, Alyth and Samson, were both really compelling and easy to like. The dual perspectives worked well to capture their personal struggles and emotions as they embark on their parallel journeys. Their interest in each other was strong though complicated by the roles laid out for them by their respective fathers and the expectations of court. The romance was fairly light as the story focuses on the mysteries and action/adventure elements, but it was still strong with elements of the choices they make and power in understanding making it seem inevitable.

Other themes around duty, decisions/power of choice, trust, complicated family relationships, socioeconomic disparity, carelessness of royalty/wealth, and deciding who you will be were all really powerful. Both of the main characters have been raised and molded into one thing, but they are each beginning to understand and decide who they will want to be moving forward. There are challenges to this, but these themes will resonate with readers who are deciding who they will be on their own, despite of/in line with their families and looking towards the future. The duties/expectations heaped upon them do not have to define them, and each is beginning to realize and attempt to forge their own future.

There is a large lead-in for the next book, and it will be challenging to wait to find out what happens next! While some of the big mysteries were solved in this book (with lots of twists and surprise reveals), the story is not yet completed. I cannot wait to see where it will take us. The magical elements combined with the mysteries and suspenseful moments make this quite the consuming read!

Final verdict: THE CRIMSON THRONE is a consuming and compelling YA historical romantic fantasy that combines fantastic world- and character-building with thought-provoking themes and surprise twists. This is an exciting first book, and readers will be eager to see how Alyth and Samson's stories will continue in the next!
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