As the dog days of summer lead into the early signs of fall, there is no shortage of new books to keep you entertained this September!

If you're already craving a pumpkin spice latte and a cozy reading session, you're in for a real treat.

This month, acclaimed authors like John Green and Leigh Bardugo will debut new releases that are sure to hit the top of our TBR pile.

So, will you dive into a spine-tingling mystery, or an emotional journey of self-discovery?

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Read on to learn all about TAG24's most anticipated book releases of September 2026.

Emiko Jean continues the saga of detective Chelsea Calhoun – which she kicked off with 2024's The Return of Ellie Black – in Before You Were Anne.

This thriller picks with Chelsea now married and pregnant, but even amid the excitement in her personal life, she finds herself drawn back into her detective life when an explosive new case crosses her desk.

A mother named Anne Walker is dead, and her teenage daughter, Naomi, has vanished. But as Chelsea digs deeper, she uncovers long-buried secrets about Anne's life that unravel years of deception.

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In a race against time, Chelsea must figure out the truth and save Naomi before it's too late.

Before You Were Anne arrives on September 1.

Babel author RF Kuang returns in September with her newest release, Taipei Story.

The novel follows Lily Chen, a Chinese American college freshman set to spend her summer in Taipei.

But just as she begins to settle in, Lily receives the heartbreaking news that he grandfather has passed away.

Lily's grief soon sparks a quest to uncover her family's history, discovering new aspects of her identity and grappling with the realities of a diaspora homecoming.

Taipei Story comes out on September 8.

Leigh Bardugo, the author of the Shadow and Bone and Six of Crows series, will wrap up her dark academia fantasy saga Ninth House with its third installment, Dead Beat.

In this dramatic conclusion, demons are haunting the halls of Yale, leading our protagonist Alex to embark on a desperate quest to find a way to stop the unleashing of an underworld war she simply cannot win.

With a crew by her side now, Alex must find the courage to face these entities – and the secrets of her past that just might hold the key to victory.

Dead Beat will be released on September 15.

John Green, the author behind beloved young adult reads like The Fault in Our Stars and Looking for Alaska, will make his adult fiction debut this month with Hollywood, Ending.

The novel follows young actors Kai Laramie and Juniper Castillo who are cast in a buzzy new biopic about artist Andy Warhol.

The movie propels both rising stars into the spotlight, and behind the scenes, their feelings for one another fall into uncharted territory.

But Kai and Juniper must also find a way to keep their sanity as the Hollywood pressure weighs down on them in this "tender, heartbreaking, and shrewdly funny" read from John Green.

Hollywood, Ending comes out on September 22.

Catch up on more of the summer season's hottest new titles with TAG24's Book Release Radars for July and August 2026. Happy reading!