Eerie Efficiency

Browse Dark Romance Books

Search the library, set your intensity, and narrow the shelf without committing to a guided match.

Find a Book in One Tap Browse by Trope
Author: Natasha Knight×
59 books match your taste
1 active filters

EERIEEFFICIENCYEEAching to Submitby Natasha KnightCOVER COMING SOON

Aching to Submit

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Readable on its own: recorded
Dark / Brutal
Spice3/5
Darkness5/10
Obsession5/10
Romance8/10
Alpha by Natasha Knight book cover

Alpha

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Standalone Dark and PNR Romance Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness8/10
Obsession8/10
Romance9/10
betrayalHunter heroprotectorreunion after six years
EERIEEFFICIENCYEEAmy’s Strict Doctorby Natasha KnightCOVER COMING SOON

Amy’s Strict Doctor

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Readable on its own: recorded
Dark / Brutal
Spice3/5
Darkness5/10
Obsession5/10
Romance8/10
Beautiful Liar by Natasha Knight book cover

Beautiful Liar

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Standalone Dark and PNR Romance Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness8/10
Obsession9/10
Romance9/10
Enemies to loversforced proximityOne-night standrevenge
Betrayed by Natasha Knight book cover

Betrayed

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: Amado Brothers
Dark / Brutal
Spice3/5
Darkness5/10
Obsession5/10
Romance8/10
Broken Queen by Natasha Knight book cover

Broken Queen

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: Ruined Kingdom Duet
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness9/10
Obsession9/10
Romance9/10
Enemies to loversfamily warforced proximitykidnapping
By Blood To Avenge by Natasha Knight book cover

By Blood To Avenge

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: The St. James Brothers
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness9/10
Obsession10/10
Romance9/10
blackmailforced proximityownershippossessive hero
By Sin To Atone by Natasha Knight book cover

By Sin To Atone

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: The St. James Brothers
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness9/10
Obsession10/10
Romance9/10
blackmailforced proximityownershippossessive hero
Captive Beauty by Natasha Knight book cover

Captive Beauty

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Benedetti Brothers
Spice5/5
Darkness8/10
Obsession8/10
Romance8/10
Beauty and the Beast motifCaptivity / forced proximityDominance / power exchange
Captive, Mine by Natasha Knight book cover

Captive, Mine

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Standalone Dark and PNR Romance Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness9/10
Obsession10/10
Romance9/10
captive/captorcriminal dangerdark obsessionforced proximity
EERIEEFFICIENCYEECaptive’s Desireby Natasha KnightCOVER COMING SOON

Captive’s Desire

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Readable on its own: recorded
Spice5/5
Darkness8/10
Obsession8/10
Romance8/10
Captivity / forced proximityDominance / power exchange
EERIEEFFICIENCYEEClaimed by the Beastby Natasha KnightCOVER COMING SOON

Claimed by the Beast

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Belonging to the Beast
Spice3/5
Darkness6/10
Obsession9/10
Romance8/10
Beauty and the Beast motifObsession / possessivenessParanormal or speculative romance
Collateral by Natasha Knight book cover

Collateral

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: Collateral Damage Duet
Dark / BrutalObsessive / Possessive
Spice4/5
Darkness8/10
Obsession9/10
Romance9/10
captive heroinedebt/collateralEnemies to loversforced marriage
Corruptible by Natasha Knight book cover

Corruptible

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Amado Brothers Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness8/10
Obsession9/10
Romance9/10
family secretsforbidden attractionhigh heatMafia brothers
Damage by Natasha Knight book cover

Damage

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Collateral Damage Duet
Obsessive / Possessive
Spice5/5
Darkness8/10
Obsession9/10
Romance10/10
Arranged marriagecaptive-to-wifeEnemies to loversestablished couple
Dangerous Defiance by Natasha Knight book cover

Dangerous Defiance

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Readable on its own: recorded
Spice3/5
Darkness6/10
Obsession5/10
Romance8/10
Deliver Me From Evil by Natasha Knight book cover

Deliver Me From Evil

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: The Augustine Brothers
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness8/10
Obsession9/10
Romance10/10
age gapArranged marriageblood contractEnemies to lovers
Descent by Natasha Knight book cover

Descent

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Benedetti Mafia World Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness9/10
Obsession9/10
Romance10/10
criminal dangerEnemies to loversforced proximityMafia romance
Deviant by Natasha Knight book cover

Deviant

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Standalone Dark and PNR Romance Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness9/10
Obsession9/10
Romance9/10
assassin herobountyEnemies to loversforced proximity
Devil’s Bargain by Natasha Knight book cover

Devil’s Bargain

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Readable on its own: recorded
Dark / Brutal
Spice3/5
Darkness6/10
Obsession5/10
Romance8/10
Devil’s Pawn by Natasha Knight book cover

Devil’s Pawn

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
Series: Devil's Pawn Duet
Dark / Brutal
Spice3/5
Darkness6/10
Obsession5/10
Romance8/10
Devil’s Redemption by Natasha Knight book cover

Devil’s Redemption

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Devil's Pawn Duet
Dark / Brutal
Spice3/5
Darkness6/10
Obsession5/10
Romance8/10
Dishonorable by Natasha Knight book cover

Dishonorable

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Amado Brothers Readable on its own: recorded
Dark / BrutalObsessive / Possessive
Spice5/5
Darkness8/10
Obsession9/10
Romance9/10
Arranged/forced marriagedebt paymentEnemies to loverspossessive husband
Dominic by Natasha Knight book cover

Dominic

by Natasha Knight
Field verification date: Not recorded yet
Last information check:
?An automated source lookup or an editor’s sourced check was recorded on this date. A lookup may have found no match. This does not mean all Eerie ratings, tropes, content warnings or Kindle Unlimited availability were reverified. Field verification is shown separately.
HEA/HFN Series: Benedetti Brothers Readable on its own: recorded
Dark / Brutal
Spice5/5
Darkness9/10
Obsession9/10
Romance9/10
damaged heroineEnemies to loversforced proximitykidnapping
123
Help Eerie stay accurate

See something wrong?

Eerie ID

Reports enter a private editorial review queue. Nothing you submit changes a Book automatically.

Your dark romance companion

Keep Eerie on your home screen

Install Eerie Efficiency through your browser. Your existing account works here; you may need to sign in again in the app.

iPhone or iPad

  1. Open this site in Safari.
  2. Open the Share menu, then choose Add to Home Screen.
  3. If shown, leave Open as Web App enabled, then tap Add.

Android

Open this site in Chrome. Tap the browser menu, then Install app or Add to Home screen, if available.

Computer

In Chrome or Edge, look for the install icon near the address bar, or use the browser’s app installation menu. Options vary by browser.

If you opened Eerie inside Facebook, Instagram or another app, first open it in Safari or Chrome.

Books, searches, quizzes and your library need an internet connection. Your private reading information is not saved for offline viewing.