Bold girls.
Brilliant teens.
Brave women rising.
From international bestsellers to quiet classics in the making,
explore 28 unforgettable, emotionally resonant books by Jill Marshall,
spanning Middle Grade, Young Adult and Women’s Fiction.
Stories for the introverted. The intuitive. The wild.
The secretly unstoppable.
Welcome to GirlPower Publishing.
STORYWORLDS in which to lose yourself, find yourself, maybe even recreate yourself ...
The Spyworld of Jane Blonde
Shy girl. Super sharp brain. Sensational spy.
From introvert schoolgirl Janey Brown to sensational spylet, it's time to meet Blonde. Jane Blonde. Grab gadgets, global missions, sister secrets, polar snow-camps, and even time-trekking showdowns with arch-nemesis Copernicus.
Middle Grade | Action | Spy-fi
|Ages 8–12
Seven sensational spy books plus
World Book Day Novella
“The Perfect Spylet”
Matilda's Magic Mysteries
Magic kickboxer. Witchly cat. Legend.
Legend-in-the-making teen Matilda (aka Tilly P) faces weird tests, furball fights, boarding school baddies, explosive frogs, international escape and monster cats galore. It’s magical mayhem with
super-sized heart.
Middle Grade – YA | Magical Realism | Mystery Adventure | Age 10 +
Four ferocious novels for big readers, cat lovers, and magical besties.
Boys' Mythic
Underworlds
Shapeshifters. Ancient beings. Myths reborn.
Jack Bootle‑Cadogan develops fur, ears, teeth - and a weird obsession with death. He's becoming Anubis. Stein is an ancient soul trapped in a boy’s body, facing the worst birthday ever. Manic mythic adventures with the united undead.
Middle Grade – YA | Ages 8–12
Mythic boys. Ancient secrets. Big-hearted quests with bite. Mythology · Transformation · Loyalty.
Doghead Trilogy and Stein & Frank
The SWAGG
Creatorverse
Big brains. Sick skills. Superpowered fallout.
A gifted team of teen misfits (Blonde, BC, Peppercorn, Stein and leader Flynn) unite to rewire the world ... with some superpowered side-effects. What begins as investigation quickly explodes into chaos - with powers, betrayals, and truths
no one’s ready for.
Middle Grade – YA | Sci-fi Adventure |
Age 10 - Teens
Inventive. High-stakes. Infinite possibility.
SWAGG Quartet + Four Origin Series
The Inner Worlds
YA Collection
Outliers. Fierce hearts. Love in unlikely places.
Soulful, coming-of-age stories where neurodiverse and challenged teens find strength, romance, and radical self-belief in a world that doesn’t always
understand them.
Gritty real life meets grounded fantasy - soft, strange and strong.
Young Adult | Romance · Neurodivergent Themes · Grounded Fantasy
Age 12+
Standalones of self-love and empowerment
Women's Second Act Stories
Messy lives. Brave choices. New stories.
From heartbreak to hilarity, these emotionally resonant novels follow women reclaiming their stories in bold and unexpected ways. These are tales of courage, chaos, and second chances that feel both personal and universal - because it’s never too late for a rewrite.
Ideal for fans of Moyes, Marian,
Moriarty & TV dramedy adaptation.
Standalone novels - romcom
to murder mystery.
About
Jill Marshall is the internationally bestselling author of 28 books, including the globally published Jane Blonde series of 7 books - translated into 11 languages, sold in 22 countries, and optioned by Oscar-winning producers.
With a publishing track record across Penguin, Hachette, Macmillan and around the world, Jill is known for middle grade adventure books with strong female leads, storyworlds ripe for TV and film adaptation, and distinctive YA and women’s fiction about reinvention and identity.
Creating unforgettable characters and high-energy plots that pull readers right into the action, her stories combine emotional intelligence with laugh-out-loud wit, delivering the kind of fiction that makes you feel like you’re in the story - not just reading it.
WHAT PEOPLE SAY
“Absolutely brilliant. A fresh, clever, and funny take on fame, fantasy, and finding your voice. The protagonist is relatable and sharp, and the emotional beats landed beautifully. Couldn’t put it down.”— Amazon
“Loved this book. Smart, sassy, and satisfying. One of those rare reads that entertains you while also making you think. A gem.”
— Goodreads Reviewer
“Oh, the women in this book! The characterisation is layered and heartbreakingly real. The portrayal of narcissistic personality disorder is one of the most accurate and compelling I’ve seen in fiction. A gripping, emotionally complex read that lingers long after the final page.” Reader Comp
“Great contemporary fiction… This is a fast‑paced modern read. We all know men like this … They turn out to be just as creative as he is manipulative. Believable characters and a great (and unpredictable) plot make this an enjoyable and very satisfying read. Highly recommended.”
— 5-stars, Amazon
“My daughter devoured this series! Jane is like a cooler, girlier James Bond, and the gadgets are so fun. She couldn’t wait for bedtime reading.”
— Amazon Parent Review
“Fantastic writing, fast-paced action, and a heroine you can’t help but love. Perfect for adventurous girls (and boys!) age 8+.”
— Waterstones Customer Review
Contact
From girl-hero spy missions, magical misfits and mythic boys to older teens and women rewriting their lives, each GirlPower tale is part of a larger storyworld - rich with emotion, character, and adaptation potential.
Jill's books are available on Amazon, Kindle, Audible, Apple and more, and in your favourite bookstore.
If you're a reader, producer, or creative partner drawn to story-led universes, let’s talk.
