Spring is finally here and September 2026 is not easing us into it gently. This month's romance releases bring forbidden MM rivalry, a bratva assassin who feels nothing, a godfather who should absolutely know better, dark romantasy openers from two of the biggest names in the genre, a stalker romance for the feral among us, and thirteen new dragon stories from the Empyrean. Whether you're here for the spice, the angst or a happily ever after worth staying up all night for, there's something below for every kind of romance reader. Here are all the books releasing this month, listed in publication order.
Midnight Curfew by Penelope Douglas
Expected publication: 1 September 2026
Series: Standalone (Sanoa Bay universe)
New York Times bestseller Penelope Douglas returns to Sanoa Bay with a forbidden MM romance between two rivals from opposing families. Callum Ames has a reputation in St. Carmen, the affluent neighbourhood butting up against the Bay, and after four years away he's back with all his bravado intact and one major secret: he doesn't want a woman. Summer is also storm season. Heat, wind, rain, and in a desperate bid to impress his influential father, Callum suggests a curfew to hinder their rivals in the Bay. Unfortunately, the Jaegers don't like rules. As Dallas Jaeger and Callum face off and engage, out for each other's blood, neither can stop the consuming fire between them or the outcome they can both already see coming: the storm of the century. Rivals to lovers with class warfare, family loyalty and Penelope Douglas's signature slow-building tension. Strictly 18+.
The Cannibal (The Poisoner #3) by I.V. Ophelia
Expected publication: 1 September 2026
Series: The Poisoner #3
The explosive final book in USA Today bestseller I.V. Ophelia's darkly addictive Poisoner trilogy, and the payoff readers have been bracing for since book one. This is the series about a botanist who kills unsavoury men and the one man who proves stubbornly resistant to her deadly poisons, while she finds herself thoroughly intoxicated by his. Gothic, gruesome and gorgeously atmospheric, with the vampiric edge and slow-creeping dread that made this trilogy such a word-of-mouth hit. Read the first two books first, then clear your evening for this one. Strictly 18+.
The Daddy's Girl (Salacious Legacy #3) by Sara Cate
Expected publication: 1 September 2026
Series: Salacious Legacy #3
New York Times and USA Today bestseller Sara Cate delivers the third scorching instalment in her Salacious Players Club spinoff, and this one is pure forbidden age gap. Amelia Kade is ready to grow up. She has loved the same man since she was young and it's time to let go of a hopeless childhood crush, especially because he isn't just any man, he's her father's best friend. Her godfather. Even if he wanted her, which he absolutely does not, their relationship is forbidden. Matis Moreau is ready for something new too. He has been running a kink club in Paris for the last thirty years and it's time to move on, the only problem being that he has nothing to move on to: a lonely fifty-three-year-old man in desperate need of a life. Then one day his best friend's daughter devises a plan. Sizzling, taboo and unapologetically spicy. Strictly 18+.
The Knave and the Moon (The Stonewater Kingdom #2) by Rachel Gillig
Expected publication: 1 September 2026
Series: The Stonewater Kingdom #2
The finale of Rachel Gillig's Stonewater Kingdom duology and the sequel to the #1 New York Times bestselling sensation The Knight and the Moth. Everything that made book one a phenomenon returns here with the dial turned all the way up: higher stakes, darker mysteries and deeper longings, wrapped in the gothic, atmospheric prose that made Gillig one of the most-recommended romantasy authors of the last few years. If you devoured The Knight and the Moth and have been counting down ever since, this is your month. Best read in order.
Savage Truce (Heart of Crime #1) by Michelle Heard
Expected publication: 7 September 2026
Series: Heart of Crime #1
Bestselling dark romance author Michelle Heard opens a brand new crime family series with an arranged marriage that starts as a ceasefire and turns into something far more dangerous. Our heroine was born into Bratva royalty, but that never made her a princess. Her whole life she has been mocked and ignored, and the only place she has ever felt like herself is at the theatre with a needle in her hand and beautiful fabrics around her. Then the pakhan announces he's marrying her to bring peace between two organisations, and she is far too terrified to argue, because saying no to the pakhan is never an option. Arranged marriage, bratva politics and a heroine who has spent her entire life being underestimated. Perfect for readers who love their mafia romance with a slow-building emotional payoff. Strictly 18+.
Big Bad Wolf (Maple Hollow #1) by Laurie Gilmore
Expected publication: 8 September 2026
Series: Maple Hollow #1
The bestselling author behind the Dream Harbor series launches a brand new small-town trilogy, this time with fangs. Maple Hollow is cosy, charming and full of the found-family warmth Laurie Gilmore built her name on, with one significant difference: the locals aren't entirely human. Big Bad Wolf is a fairytale-flavoured paranormal romance that keeps every bit of the swoony, low-angst, autumnal comfort her readers turn up for, then adds a shifter hero and a slow-burn pull neither of them can outrun. A perfect entry point if you're paranormal-curious but not ready for full dark romance.
Anton (Marinov Bratva #4) by Lilian Harris
Expected publication: 9 September 2026
Series: Marinov Bratva #4
He's the mob assassin who feels nothing… until his next target. Lilian Harris returns to the Marinov Bratva with the book her readers have been circling since the series began, and Anton is exactly the kind of cold, lethal, emotionally unavailable hero this genre was built for. A man who has spent his entire life feeling absolutely nothing about the people he's sent to kill, and one target who ruins that for him permanently. Expect obsession, violence, a very steep fall, and the deeply satisfying spectacle of an unfeeling man discovering he is capable of exactly one feeling and it's about her. Best read after the earlier Marinov Bratva books. Strictly 18+.
The Emperor's Enemy (Unsurvivable Love Duet #1) by Jasmine Mas
Expected publication: 15 September 2026
Series: Unsurvivable Love Duet #1
The all-new series from Jasmine Mas, bestselling author of Blood of Hercules, and it is an addictive, genuine enemies-to-lovers dark romantasy. Zora Ravenal didn't join the Crimson Army to be a hero, she joined to destroy the empire. A skilled hunter hardened by loss and cursed with a concerning capacity for stubbornness, she claws her way into becoming a Knight Mage: the Commonwealth's deadliest defence against the Empire's storm magic and her people's only hope. Now she's stuck in a war she can't walk away from, hiding dangerous secrets, and shoved into very close quarters with the one man she should never be alone with. He is Aleksander, the divinely ordained Emperor and Royal Mage, hellbent on capturing her once and for all, and he will use everything and everyone in his power to possess her, even Tarantula, the deadliest assassin in the empire's arsenal. But Zora is hunting them back. A heroine who doesn't need saving, an enemy she can't escape and a war neither of them plans to lose. Strictly 18+.
Love Antidote by Brynne Weaver
Expected publication: 15 September 2026
Series: Standalone novella
The queen of romantic comedy about serial killers is back, and this time she's doing it in novella form. Love Antidote is a darkly romantic short about love, murder and dessert, following two hired assassins who really should be killing each other and are instead doing something far more inconvenient. If you fell for Butcher & Blackbird and the Ruinous Love trilogy, this is the same gleeful, gory, weirdly wholesome cocktail Brynne Weaver does better than anyone, just in a single sitting. Please note this releases as an Amazon Original Stories title, so it's a digital and audio release rather than a print edition. Strictly 18+.
Grim Tidings by B.K. Borison
Expected publication: 15 September 2026
Series: Ghosted #2
The Lovelight author heads somewhere altogether more supernatural with a paranormal romance pairing a guardian angel with a grim reaper. It is exactly the premise it sounds like: one person whose entire job is keeping humans alive, one person whose entire job is collecting them when they aren't, and a slow-building attraction that neither side of the afterlife bureaucracy is going to approve of. Warm, witty and full of the character-first tenderness B.K. Borison's readers adore, with just enough autumnal spookiness for the season.
Fallen Rook (Society of Villains #3) by L.J. Shen
Expected publication: 22 September 2026
Series: Society of Villains #3
New York Times bestseller L.J. Shen returns to the Society of Villains with a sizzling age gap forbidden MM romance between an FBI agent and the Camorra enforcer who thaws his frozen heart. Tom Rothwell knows a secret that can destroy the most powerful crime organisation in America. For years he has watched Enzo Ferrante get away with murder, slipping between the FBI's fingers time after time, spreading terror and mayhem across the streets of New York, all of it masked beneath a gorgeous face and an elegant pedigree. What starts as surveillance becomes obsession, and what starts as obsession becomes something neither of them can afford. If Bad Bishop got you into this series, this is the instalment where the Ferrante name really starts to earn its reputation. Strictly 18+; check content warnings before reading.
In the Dark (Kept in Paradise #2) by Shain Rose
Expected publication: 29 September 2026
Series: Kept in Paradise #2
Shain Rose continues the Kept in Paradise series with a dark syndicate forced-marriage romance, and it is exactly as claustrophobic and obsessive as that description promises. A woman married off to secure something she had no say in, a man who runs an organisation that does not lose, and an island setting that looks like paradise and functions like a very beautiful cage. Forced marriage, possessive hero and the sort of morally black love interest Shain Rose has built a following on. Strictly 18+.
Threshing Day (The Empyrean #3.5) by Rebecca Yarros
Expected publication: 29 September 2026
Series: The Empyrean #3.5
The next book in the blockbuster Empyrean series and the one every Fourth Wing reader has had circled since it was announced. Threshing Day is a collection of thirteen stories returning readers to Basgiath, the riders and the dragons we have all become unreasonably attached to, told from a spread of perspectives across the world Rebecca Yarros built. The deluxe first edition includes sixteen original full-colour illustrations by artist Joe Requeza, making it as much a collector's piece as a read. Best enjoyed once you're caught up on the main series, unless you enjoy being spoiled for sport.
Florescentia (The Luminary #1) by I.V. Ophelia
Expected publication: 29 September 2026
Series: The Luminary #1
She summoned him for luck. He wants her for eternity. I.V. Ophelia opens a hauntingly dark new romantasy series with an inventor and a star-born beast on a collision course. In the bioluminescent, star-worshipping city of Astraea, inventor and occultist Lucia Fairfax harvests a very particular currency from the shadows: luck itself, drawn from a dimension she calls the Otherside. When a ritual fails and her husband dies, her carefully cultivated fortune bleeds dry, and her desperate attempt to restore it summons something far worse than luck. Altair is a cosmic entity born of an ancient constellation, both human and not, impossibly seductive and unnervingly sentient, and crossing into his realm is the most dangerous thing Lucia has ever done. It's also the most irresistible. Gothic monster romance with a heroine whose ambition is every bit as dangerous as his hunger. Strictly 18+.
That's our September 2026 round-up! From forbidden MM rivals and a Camorra enforcer to bratva assassins, godfather age gap, arranged marriage ceasefires, two enormous romantasy openers, a stalker romance for the feral, angels and reapers, small-town shifters and thirteen new stories from the Empyrean, there's a September TBR for every flavour of romance reader, with extra spice for our dark romance lovers.
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