- First published
- 2022
- Audience
- Adult / Crossover
- Series position
- 1 of 2
- Series status
- Complete series
- Commitment
- Short series
- Profile basis
- Individual book
- Series
- The Shepherd King
Taste profile
At a glance
- Tone
- Gothic
- Pace
- Measured
- Magic
- High
- Prose
- Accessible
- Romance
- Major thread
A young woman hiding illegal magic joins a quest while sharing her mind with a dangerous entity.
Elspeth has survived magical infection by concealing it, but the voice in her head is becoming harder to contain. A royal captain’s quest for the complete Providence Card deck gives her a possible route to change.
The hard-magic label applies to the Cards and their known powers and costs. The Nightmare remains less predictable, which adds gothic uncertainty without making the entire system soft.
Best if you want
- Gothic atmosphere, a card-based magic system, and romantic tension.
- A complete duology with a focused quest and personal magical cost.
Think twice if you need
- A bright tone, low horror, or romance kept peripheral.
- A broad epic world with many nations and viewpoint characters.
Fantasy Fit Matrix
One Dark Window
Individual book / gothic tone / measured pace
Taste intensity
Political intrigue
3/ 5
Darkness
4/ 5
Character focus
4/ 5
Plot complexity
3/ 5
Worldbuilding depth
3/ 5
Taste categories
- Prose difficulty
- AccessibleAccessible / Moderate / Literary
- Romance role
- Major threadNone / Subplot / Major thread / Central
- Magic presence
- HighLow / Medium / High
- Magic-system type
- HardNone / Soft / Hard / Hybrid
Reading commitment
- Series status
- Complete series
- Series commitment
- Short series
- 2 published books
Outside the score
Reader context
Audience and content guidance help prevent unsuitable matches. They do not change what a Matrix value means.
- Intended audience
- Adult / Crossover
- Written for its primary audience, but commonly suitable across age groups.
- Profile basis
- Individual book
- The Matrix values describe this volume, not an average for the whole series.
- Series context
- The Shepherd King
- Volume 1 of 2 published books.
Reader advisories
- Violence
- Horror elements
- Grief and loss
This is practical guidance, not an exhaustive content-warning list.
Data quality
Editorial record
Matrix v1.0 / calibrated / high confidence / reviewed 2026-07-23
If you liked One Dark Window, start here.
The closest matches in the current library, calculated with Matrix v1.0. Scores reflect taste similarity and audience suitability. Books from this series are excluded, and each recommended series appears only once.
84.2%
Calculated fit
Ongoing series
Sabriel
by Garth Nix / The Old Kingdom
- Best if you want
- A distinctive necromancy system and a capable young heroine.
- Think twice if you need
- Low horror, little child peril, or a cozy magical school.
- Closest match
- The strongest alignment is in tone and character focus.
- Biggest difference
- The clearest shift is in romance role and pace.
79.2%
Calculated fit
Ongoing series
Fourth Wing
by Rebecca Yarros / The Empyrean
- Best if you want
- Fast pacing, dragons, and central romantic tension.
- Think twice if you need
- Romance kept in the background.
- Closest match
- The strongest alignment is in worldbuilding depth and character focus.
- Biggest difference
- The clearest shift is in tone and romance role.
78.8%
Calculated fit
Ongoing series
The Serpent and the Wings of Night
by Carissa Broadbent / Crowns of Nyaxia
- Best if you want
- Adult romantasy with vampires, trials, and enemies-to-lovers tension.
- Think twice if you need
- Low violence, little sexual content, or a complete overall series.
- Closest match
- The strongest alignment is in worldbuilding depth and character focus.
- Biggest difference
- The clearest shift is in tone and romance role.
78.4%
Calculated fit
Standalone
Uprooted
by Naomi Novik
- Best if you want
- A complete standalone shaped by folklore, dangerous magic, and an ominous forest.
- Think twice if you need
- A gentle mentor-student dynamic.
- Closest match
- The strongest alignment is in worldbuilding depth and character focus.
- Biggest difference
- The clearest shift is in tone and tropes.
78.3%
Calculated fit
Standalone
Nettle & Bone
by T. Kingfisher
- Best if you want
- A compact dark fairy tale with humor, horror, and a practical heroine.
- Think twice if you need
- A gentle fairy tale without domestic abuse or body horror.
- Closest match
- The strongest alignment is in worldbuilding depth and tone.
- Biggest difference
- The clearest shift is in subgenre and romance role.