These Are the 10 Best Books to Look Out for in September 2025

I’m back with my monthly roundup of the best new books to keep an eye out for, and quite a few of our most anticipated reads of 2025 are dropping this month. From fantasy and romance to cosy crime, a Greek mythology retelling, and an age gap romance, there’s something for every reader.
So, here are the books that you won’t want to miss this September. Missed August’s roundup? You can find it right here.
The Secret of Secrets by Dan Brown
- Release date: September 9
Can you believe that it’s been over 20 years since Dan Brown’s The Da Vinci Code was first released? Well, Robert Langdon (played by Tom Hanks in the movie adaptation) is back in The Secret of Secrets.
In it, we travel to Prague as Robert accompanies the celebrated academic, Katherine Solomon (who fans of the series might remember from the third book), to a lecture she’s been invited to give. Things soon take a sinister turn when she disappears without a trace.
In a city known for its dark past, he must call upon all of his arcane abilities and knowledge to get answers and save the woman that he loves.
Alchemised by SenLinYu
- Release date: September 23
It’s not the first time that we’ve seen fan fiction make its way onto bookstore shelves. Still, with the original iteration of SenLinYu’s story garnering over 20 million individual downloads, it’s no surprise that the new and reworked take on it has become one of the most pre-ordered and talked about books this year.
A reimagining of Manacled, the ‘Dramione’ (Draco Malfoy and Hermione Granger romance) fan fiction that captured the attention of the masses, Alchemised explores many of the same themes.
It follows Helena, a once-promising alchemist who is being held prisoner. However, she can’t remember the months leading up to her capture, making her enemies wonder exactly what she’s hiding. In a bid to recover her lost memories, she’s sent to live with one of the most powerful and ruthless necromancers, though he seems to be keeping just as many secrets. Let’s just say, we can’t wait to give this a read.
Uncharmed by Lucy Jane Wood
- Release date: September 16 (US)/September 18 (UK)
With spooky season fast approaching, Uncharmed by author and YouTuber Lucy Jane Wood is giving us witchy vibes in the very best way. Brimming full of magic, found family, and slow-burn romance, it’s perfect for the fast-approaching spooky season, or any time you want a little enchantment.
When Annie is tasked with mentoring a troubled teenage witch with extraordinary powers, it throws her seemingly perfect life into disarray. A tale of found family, there’s also a lovely slow burn romance at its core between Annie and Hal, the gruff warlock and owner of their temporary lodgings.
Even though it’s set in the same world as Lucy’s debut book, Rewitched, it’s not a sequel. So, there’s nothing to stop you from starting with Annie’s story first. Just don’t be surprised if you end up going back to read her first book next.
The Impossible Fortune by Richard Osman
- Release date: September 25 (UK)/September 30 (US)
With The Thursday Murder Club movie hitting our screens at the end of last month, fans of the cosy crime series will be thrilled to know that the gang is taking on a new case, and it kicks off with a wedding.
Yes, there might not have been as many cases for them to work on – with Elizabeth grieving, Ron dealing with family issues, Ibrahim providing therapy to a certain criminal, and Joyce being kept busy with all the wedding planning.
However, when Elizabeth meets a wedding guest who is in fear for his life, the gang is plunged back into things. With a villain who will stop at nothing to get access to an uncrackable code, can they solve the puzzle—and another murder—in time? I can’t wait to spend a weekend reading this.
Wild Reverence by Rebecca Ross
- Release date: September 2 (US)/September 11 (UK)
If you’re already familiar with Rebecca Ross’ Divine Rivals and the follow-up Ruthless Vows, you should recognise some familiar characters from the same world in her latest release, Wild Reverence. Yet, this is a standalone story.
Leaning into the ‘goddess x mortal’ trope, it follows Matilda, who has been blessed with messenger magic, and Vincent, who dreams of her despite them never having met.
Ten years ago, he wrote to the goddess for help, but his plea went unanswered until now - when she comes bearing a letter that could change both their destinies and tie them together far beyond his dreams.
Tourist Season by Brynne Weaver
- Release date: September 23
The beginning of a new trilogy for Butcher & Blackbird’s Brynne Weaver, Tourist Season seamlessly blends romance and murder in a way that only she can manage.
Harper is keen to protect the seaside town of Cape Carnage from troublesome tourists, and she’ll quite literally kill to do so. Nolan, on the other hand, isn’t your average tourist; he’s out for revenge.
On the anniversary of the hit-and-run accident that upended his life, he slays one target, and this year he’s got his sights set on Harper. Yet, when an amateur true crime investigator arrives looking for answers in the small town, the two agree to a truce. But could the two of them getting closer lead to something altogether more unexpected?
Thief of Night by Holly Black
- Release date: September 23
The highly anticipated sequel to Holly Black’s Book of Night, which just so happens to be the conclusion to the duology, Thief of Night should be at the top of your TBR (to be read) list this September.
The story picks up after Charlie ultimately bartered with the Cabal for her boyfriend Vince’s freedom. But in doing so, she’s ended up having to hunt rogue shadows on their behalf. It also doesn’t help that the tether that binds Charlie and Vince has erased all the memories he had of her and summoned Red, a dangerous Blight with Vince’s face.
With this entity no longer trusting or even liking her, it makes for a lonely and vulnerable existence as she battles to save herself, and at what cost? You’ll need to pick up a copy to find out.
Hekate by Nikita Gill
- Release date: September 16
Fans of Greek mythology retellings are in for a treat this September thanks to Hekate by Nikita Gill.
A child of war, Hekate becomes the all-powerful goddess of witchcraft and necromancy, raised by Styx and Hades in the Underworld after being separated from her parents. And in this coming-of-age story, she must step into her true powers when war breaks out once again, before everything from Mount Olympus to the Underworld is destroyed.
And what she soon realises is that even the most powerful Olympians are terrified of her. Let’s just say, it will no doubt have you itching to delve deeper into the lore and explore more of the backstory to some of the other characters, that’s for sure.
The Killer Question by Janice Hallett
- Release date: September 4 (UK)/September 23 (US)
We’ve previously enjoyed Janice Hallett’s intriguing mysteries The Appeal and The Examiner, and her latest—The Killer Question—will keep you guessing until the very end. It also features the mixed media format that she’s known for.
In this story, the landlords of a quiet country pub have gone missing, the windows long since boarded up. What happened to Mal and Sue? Did it have anything to do with the body found in the nearby river days before? Or maybe it had something to do with the usually quiet weekly quiz, after a mysterious new team of outsiders arrived and started winning every round.
By sifting through WhatsApp chats and quiz sheets, the couple’s hidden past is slowly revealed. Will you be able to work out who is responsible from the clues provided?
Wild Card by Elsie Silver
- Release date: September 9
There are some great romance books to look forward to this September. From Tessa Bailey’s sports romance Pitcher Perfect, to the cosy If It Makes You Happy by Julie Olivia. But, I personally cannot wait to return to the fictional town of Rose Hill with Elsie Silver’s latest release, Wild Card.
The fourth book in the series, although it can be read as a standalone, follows Gwen and Bash, and grumpy pilot Bash just so happens to be Gwen’s ex-boyfriend’s dad.
Cue some of our favourite romance tropes, such as forced proximity – with them both living under the same roof – and some serious mutual pining.
Given that Bash is trying to mend the rather fragile relationship that he has with his son, they both know that acting on their growing feelings would not only break the rules but also potentially betray the one person who connects them. Basically, if you love a good age gap romance, look no further.
Ellis is a freelance journalist, based in the UK, with a love of all things books. She also routinely chairs bookish events up and down the country, getting the scoop from some of the biggest and bestselling authors to keep you in the know.