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The Best Book Series for Adults: Must-Reads for Every Bookshelf

Are you searching for your next literary escape? Whether you’re a fan of gripping thrillers, epic fantasies, or thought-provoking dramas, there’s a book series out there for every adult reader. In this post, we’ve curated a list of the best book series for adults that will keep you hooked from the first page to the last. These series not only offer unforgettable storytelling but also provide hours of entertainment and intellectual stimulation. Let’s dive in!


1. A Song of Ice and Fire by George R.R. Martin

book series for adults

If you love epic fantasy filled with complex characters, political intrigue, and jaw-dropping twists, this series is a must-read. The books, starting with A Game of Thrones, inspired the hit TV show Game of Thrones, but the novels offer even more depth and detail. Perfect for fans of world-building and morally gray storytelling.

Why You’ll Love It: Rich lore, unforgettable characters, and a plot that keeps you guessing.


2. Outlander by Diana Gabaldon

best book series for adults

Blending historical fiction, romance, and time travel, the Outlander series is a sweeping saga that transports readers to 18th-century Scotland and beyond. Follow Claire Randall and Jamie Fraser as they navigate love, war, and adventure across centuries.

Why You’ll Love It: A perfect mix of history, romance, and adventure that appeals to a wide audience.


3. The Millennium Series by Stieg Larsson (and David Lagercrantz)

best book series for adults

For fans of dark, gripping thrillers, the Millennium Series (starting with The Girl with the Dragon Tattoo) is a must-read. This series follows hacker Lisbeth Salander and journalist Mikael Blomkvist as they uncover shocking crimes and conspiracies.

Why You’ll Love It: Fast-paced, suspenseful, and packed with unforgettable characters.


4. The Broken Earth Trilogy by N.K. Jemisin

best book series for adults

This award-winning sci-fi/fantasy series, beginning with The Fifth Season, explores themes of oppression, survival, and resilience in a world plagued by catastrophic climate events. N.K. Jemisin’s writing is both powerful and poetic, making this series a standout in the genre.

Why You’ll Love It: A groundbreaking series with deep emotional resonance and stunning world-building.


5. The Neapolitan Novels by Elena Ferrante

best book series for adults

This four-book series, starting with My Brilliant Friend, follows the lifelong friendship between two women in post-war Naples, Italy. Elena Ferrante’s writing is raw, honest, and deeply moving, making this series a favorite among literary fiction fans.

Why You’ll Love It: A poignant exploration of friendship, identity, and the complexities of life.


6. The Expanse by James S.A. Corey

best book series for adults

For sci-fi enthusiasts, The Expanse series is a thrilling ride through space, politics, and humanity’s future. Starting with Leviathan Wakes, this series combines action, mystery, and thought-provoking themes about society and survival.

Why You’ll Love It: A perfect blend of hard sci-fi and character-driven storytelling.


7. The Dublin Murder Squad by Tana French

best book series for adults

If you’re a fan of psychological thrillers and crime fiction, Tana French’s Dublin Murder Squad series is a must-read. Each book focuses on a different detective, offering fresh perspectives and intricate mysteries. Start with In the Woods for a chilling introduction.

Why You’ll Love It: Atmospheric, suspenseful, and brilliantly written.


8. The Dark Tower by Stephen King

best book series for adults

Stephen King’s magnum opus, The Dark Tower series, blends fantasy, horror, and western elements into a unique and unforgettable saga. Follow Roland Deschain, the last gunslinger, on his quest to reach the mysterious Dark Tower.

Why You’ll Love It: A genre-defying series with King’s signature storytelling mastery.


9. The Cormoran Strike Series by Robert Galbraith (J.K. Rowling)

best book series for adults

Written by J.K. Rowling under her pseudonym, this detective series follows private investigator Cormoran Strike and his partner Robin Ellacott as they solve complex cases in London. Start with The Cuckoo’s Calling for a gripping introduction.

Why You’ll Love It: Clever mysteries, well-developed characters, and a touch of noir.


10. The Kingkiller Chronicle by Patrick Rothfuss

best book series for adults
Best book series for adults

Though still awaiting its final installment, this fantasy series, beginning with The Name of the Wind, has captivated readers with its lyrical prose and intricate storytelling. Follow Kvothe, a gifted musician and magician, as he recounts his life’s adventures.

Why You’ll Love It: A beautifully written fantasy series with a unique narrative style.


Why These Series Stand Out

These book series are more than just entertainment—they’re immersive experiences that transport readers to new worlds, challenge perspectives, and evoke deep emotions. Whether you’re looking for a quick escape or a thought-provoking read, these series have something for everyone.