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Ali Hazelwood Books in Order

Explore Ali Hazelwood books in order, with summaries, series guides, reading order tips, and where to start with her STEM romances and paranormal stories.

Last updated: June 7, 2026

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16 books

The Love Hypothesis

by Ali Hazelwood

2021

Biology PhD candidate Olive Smith panics and kisses stern professor Adam Carlsen to convince her best friend she is happily dating. Their fake relationship, played out across labs and conferences, slowly turns into something much riskier and far more real.

The Love Hypothesis: Extra Chapter

by Ali Hazelwood

2021

This bonus chapter returns to the world of The Love Hypothesis from Adam Carlsen’s point of view, revisiting a pivotal moment to show his quiet pining, fierce protectiveness, and how deeply the fake dating experiment changed his life.

Below Zero

by Ali Hazelwood

2022

NASA aerospace engineer Hannah is injured and stranded at a remote Arctic research station after a risky mission. The only person willing to attempt her rescue is Ian, the rival she once pushed away, forcing them to confront old grudges in close, freezing quarters.

Love on the Brain

by Ali Hazelwood

2022

Neuroscientist Bee Königswasser lands her dream assignment designing neuro helmets for astronauts, only to discover her co-lead is Levi Ward, the grad school nemesis she thinks despises her. Working side by side at a space agency, enemies turn into unexpected allies and more.

Stuck with You

by Ali Hazelwood

2022

Civil engineer Sadie spends one perfect day and night with Erik from a rival firm, then learns his company stole the client she was chasing and cuts him off completely. Months later, a stalled New York elevator traps them together with no escape from the truth.

Under One Roof

by Ali Hazelwood

2022

Environmental engineer Mara inherits half of a Washington DC townhouse and finds it already occupied by Liam, a big oil lawyer who wants her out. Thermostat battles and late night run ins slowly turn their enemies-to-roommates standoff into reluctant, undeniable attraction.

Check & Mate

by Ali Hazelwood

2023

Once a teen chess prodigy, Mallory Greenleaf quit the game after it helped wreck her family. Beating world champion Nolan Sawyer in a charity tournament pulls her back into high level competition and into a slow burn rivalry that starts to look a lot like first love.

Love, Theoretically

by Ali Hazelwood

2023

Theoretical physicist Elsie Hannaway juggles exhausting adjunct jobs and a secret side gig as a fake girlfriend just to stay afloat. When she interviews for her dream position at MIT, she collides with experimentalist Jack Smith, both her client’s brother and her field’s infamous critic.

Bride

by Ali Hazelwood

2024

Vampyre Misery Lark agrees to an arranged marriage with werewolf alpha Lowe Moreland to shore up a fragile truce between species and chase her own secret goals. Living inside his pack, she uncovers buried loyalties, dangerous politics, and a chemistry she never planned on.

Cruel Winter with You

by Ali Hazelwood

2024

New pediatrician Jamie Malek only wants to borrow a roasting pan for Christmas dinner, but a sudden blizzard strands her with Marc, her childhood crush and her best friend’s now wealthy brother. One snowed in night forces them to confront old heartbreak and still smoldering sparks.

Not in Love

by Ali Hazelwood

2024

Biotech engineer Rue Siebert has finally built a stable life at food science start up Kline, until a looming takeover led by Eli Killgore throws everything into chaos. Their secret, time limited affair forces both to choose between loyalty, ethics, and overwhelming desire.

Two Can Play

by Ali Hazelwood

2024

Game designer Viola Bowen finally gets to adapt her favorite fantasy series for a video game, only to be paired with longtime office rival Jesse Andrews. Stranded together at a snowy team retreat, they unpack old grudges and discover heat beneath all the snark.

Deep End

by Ali Hazelwood

2025

Stanford platform diver Scarlett “Vandy” Vandermeer is clawing her way back from a devastating injury when swim star Lukas Blomqvist asks her to help him explore kink and control outside the pool. Their friends-with-benefits deal soon exposes raw feelings neither planned to face.

Hot for Slayer

by Ali Hazelwood

2025

Immortal vampyre Ethel finds her sworn enemy, vampire slayer Lazlo, with his memories erased and no idea they have spent centuries trying to kill each other. Letting him crash on her couch turns a blood feud into domestic banter, dangerous longing, and a very sharp kind of love.

Mate

by Ali Hazelwood

2025

Human-Were hybrid Serena Paris becomes a lightning rod for tensions between Weres, Vampyres, and humans after revealing what she is. To stay alive she turns to stoic alpha Koen Alexander, and their uneasy alliance slowly grows into a bond that could reshape their world.

Problematic Summer Romance

by Ali Hazelwood

2025

At her brother Eli’s destination wedding in Sicily, grad student Maya Killgore keeps getting pushed together with Conor Harkness, his older business partner and the man she has quietly loved for years. A week in a seaside villa turns off limits tension into a risky summer fling.

Where should I start?

If you want her classic STEM rom-coms: The Love HypothesisLove on the BrainLove, Theoretically
If you prefer quick novella reads: Under One RoofStuck with YouBelow Zero
If you like steamier contemporary romance: Not in LoveProblematic Summer RomanceDeep End
If you love paranormal and monster romance: BrideMateHot for Slayer
For a YA-friendly starting point: Check & MateTwo Can Play

Author bio

Ali Hazelwood grew up in Italy, a bookish kid who loved science as much as stories. She later lived in Germany and Japan before moving to the United States for graduate school, where neuroscience and lab life became part of her daily routine.

In grad school she focused on brain stimulation and cognitive neuroscience, splitting her time between research, teaching, and writing on the side. Academia gave her a front row seat to the pressures women face in STEM, from subtle bias to outright gatekeeping, and those experiences quietly shaped the romances she would go on to write.

During those same years she was also very active in fanfiction communities, first for science fiction shows and eventually for Star Wars. Long nights in the lab often ended with her posting new chapters, swapping comments with readers, and discovering how much fun it was to build slow burn relationships on the page.

One of those fan stories eventually became the seed of The Love Hypothesis. A literary agent reached out after reading her work online, encouraging her to turn the idea into an original novel. Hazelwood rewrote the characters into a biology PhD candidate and a grumpy professor at Stanford, kept the fake dating, and grounded the story in the messy reality of grant deadlines and conference drama.

When The Love Hypothesis was published it struck a chord with readers, spending months on bestseller lists and spreading quickly by word of mouth. Success opened the door to more books, and Hazelwood kept returning to the same well she knew best, women in STEM fields trying to build a life and maybe fall in love along the way.

She followed with Love on the Brain, set around a neuroscience project at a space agency, and the three STEMinist novellas Under One Roof, Stuck with You, and Below Zero, which spotlight engineers and scientists juggling friendship, career, and very inconvenient attraction. Later novels like Love, Theoretically and Check & Mate pushed into new corners of academia and competitive chess while still centering smart, slightly overwhelmed heroines.

At the same time, Hazelwood began playing with genre. Bride and its companion Mate imagine a world of Vampyres, Weres, and humans locked in uneasy political alliances, while books like Not in Love, Deep End, Problematic Summer Romance, and shorter works such as Cruel Winter with You and Hot for Slayer lean into higher heat, kink, and darker emotional territory.

Across all of these stories a few threads stay constant. Her heroines are intensely capable at work but often uncertain in their personal lives. Power imbalances, whether in the lab, the boardroom, or a supernatural council chamber, are handled with a focus on consent, communication, and emotional safety. The tone is modern, geeky, and often very funny, even when the topics brush against trauma, prejudice, or mental health.

Hazelwood eventually stepped away from her professor job to write full time, but she still talks about research and teaching with obvious fondness. She has mentioned spending her off hours crocheting, watching science fiction movies, and hanging out with her three cats and her husband.

She continues to live in the United States, writing new romances that blend scientific detail, sharp banter, and a lot of heart. And she has been clear that fanfiction is still home for her, a place she plans to return to whenever she can carve out the time.

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

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All 16 Ali Hazelwood Books in Order (Complete List 2026)