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Book Review: Double Your Standards by Sarah Blue

This is our review for Double Your Standards by Sarah Blue which is the third book in the Carlson Brothers series.

At the time of publishing this guide, this story is available on Kindle Unlimited.

Click here to buy Double Your Standards


If you’ll be reading this story for a book club, you can find our free printable book club discussion guide here.

Star rating

Pepper rating (find our Pepper scale here)

5 Peppers - Inferno

Book Review: Double Your Standards

Double Your Standards is the final book in the 3-book Carlson Brothers series by Sarah Blue and I read it last as it takes place several years after the first two books. After reading what all three were about, this is the one I was most excited about. I do love a reverse-harem and hot twins too? Yes, please!

Our buttoned-up college professor, Kate, reeling from her divorce, creates what I like to affectionately call a “f*cket list” of things she wants to try. Enter Gavin and Ben, or was it Ben and Gavin? Either way, following Kate’s journey of self-discovery was excellent.

This was a 4* read for me. I loved it. I might even make it a 5* read one day, although thus far I haven’t had a lot of opportunities to consistently recommend it, other than to you dear review reader.

If you love a book where he’s a dom and she’s a sub, this book is for you. If you love a book where he’s a sub and she’s a domme, this book is for you. If you love a “taking two twins at once (no sword-crossing)” kink, this book is for you. The author also looked at this taboo relationship through the lens of professional appearance, particularly for an educator, in a way that explored the positives and negatives of having your personal life crash into your professional life without it being a professor x student trope.

The only thing I would say about this book is that the outside forces used to create tension were similar to that of the first book in the series – which the characters also identify within the pages – but it felt a little repetitive and on the nose in a series where each book has its own unique characters, tropes, and kinks. But if that’s the worst someone can say about a spicy romance, a genre that’s built its success on entire series’ of the same book over and over again, then you’re onto a winner in my opinion.

Click here to buy Double Your Standards

Sarah Blue Double Your Standards

Written by:
Our Spicy Book Club
Published on:
January 30, 2026
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Categories: Spicy Book ReviewsTags: Divorce/Post Divorce, Dom/Sub, Domme/Sub, Forbidden Romance, Independent FMC, Kink Friendly, POV - Multiple First Person, Reverse Harem, Sarah Blue Books, Sex Club, The Carlson Brothers Series, Twins

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Looking for a trope or theme?

Academia
Accidental Pregnancy
Adoption
Age Gap
Animal Companion
Antihero
Arranged Marriage
Artist
Audiobook Narration – Dual
Audiobook Narration – Duet
Audiobook Narration – Male
BDSM
Beach Read
Best Friend’s Brother
Best Friend’s Daughter
Best Friend’s Sister
Best Friend’s Son
Bi-Awakening
Billionaire
Bisexual
Bodyguard
Boss/Employee
Boy/Girl Next Door
Brother’s Best Friend
Cancer
Captor/Captive
Cheating
Chef
Christmas
Colleagues
Consensual Non-Consent (CNC)
Cozy Romance
Crime
Curvy FMC
Daddy/Baby
Dangerous Attraction
Dark Romance
Death Of A Loved One
Diverse Romance
Divorce/Post Divorce
Doctor/Patient Romance
Doctor/Patient’s Family Member
Dom/Sub
Dominant
Domme/Sub
Dragons
Enemies To Lovers
Erotica
Ex’s Dad
Ex’s Daughter
Ex’s Sister
Exhibitionism
Fairytale Retelling
Fake Relationship
Fall Romance
Famous/Not Famous
Fast Burn
Fated Mates
FFM
Firefighter
Forbidden Romance
Forced Marriage
Forced Proximity
Found Family
Friends To Lovers
Gay Romance
Golden Retriever
Grief
Grumpy MMC
Grumpy/Sunshine
Happy For Now
He Falls First
Historical Romance
Hockey
Holiday Romance
Hotwifing
Inanimate Objects
Independent FMC
Indian
Irish Mafia
Journalist
Kidnapper/Captive
Kink Friendly
Knifeplay
Landlord/Tenant
Law Enforcement
Law Enforcement/Criminal
LGBTQ Romance
Mafia
Masked Stalker
Meet-Cute
Modern Matchmaking
Monarchy
Monk
Morally Gray FMC
Morally Gray MMC
Mystery
Nanny/Parent
Nerds
Nocturne Falls Universe
Nun
One Bed
Paranormal Romance
Pierced MMC
Pleasure Dom
Plus-Size FMC
Polyamory
Possessive Hero
POV – Dual First Person
POV – Dual Third Person
POV – First Person
POV – Multiple First Person
POV – Multiple Third Person
POV – Third Person
Priest/Parishioner
Psychological Thriller
Ranch
Regency Romance
Religious Romance
Religious Trauma
Reverse Harem
Rom-Com
Romantasy
Second Chance
Secret Child
Serial Killer
Sex Club
Sex Worker
Shibari
Shifters
Silver Fox
Single Dad
Single Mom
Sister’s Best Friend
Sister’s Ex
Slow Burn
Small Island Life
Small Town
Sports
Stalker
Step-siblings
Strong FMC
Submissive
Sugar Daddy
Summer Romance
Suspense
Taboo Kinks
Teacher/Parent
Thirst Trap
Thriller
Twins
Twisted Romance
Urban Fantasy
Video Games
Vigilante Justice
Virgin FMC
Voyeurism
Werewolf
Why Choose
Winter
Witch
Wolves
Workplace Romance

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