Subject Twenty-One

A laudable debut with a sustained narrative and characterisations that demand the reader keep on their toes.

NB Magazine

A thought-provoking and enjoyable read with intriguing premises and an original setting.

Future Fire Reviews

A fascinating read

Cheryl M-M's Book Blog

An interesting story, wonderfully written.

Jera's Jamboree

Well-thought out and fun to read.

Rosie Writes

A well-told story, incorporating some particularly interesting ideas.

Popular Science

Warren's ideas in this book are wonderful, playing on the current ambivalence about genetic engineering and envisaging a world in which it's the basis of a whole new caste system.

The Idle Woman

Incredibly well-written...would happily recommend it to everyone.

Blam Books

A unique and intriguing narrative in a believable dystopia.

Feed Me Fiction

Full of clever imaginings that make a thought provoking read . . . I found myself completely gripped by the story and fully immersed in its eerily atmospheric world.

BookClubForMe

Really interesting and thought provoking . . . explores the idea of what it is to be human, and whether we can live alongside each other without feeling the need to be "better" than anyone else

RamblingMads

Incredible . . . without a doubt one of the best YA sci-fi books I've ever read.

Out and About Books

I really loved Subject Twenty One . . . I just couldn't stop reading. This book made me cry, made me laugh, and made me think about my own life.

Nerdy Book Dragon

An unexpectedly wonderful read. Unique and engaging with full Jurassic vibes to boot.

Fictional Maiden

[An] amazing debut sci-fi novel . . . I'd recommend everyone to read if you want a unique and fresh dystopian storyline

Darkling Reads

Instantly engaging . . . widens out from a tale of a girl trying to find her own identity to a broader story encompassing an entire population's burden of oppression, and the desire for freedom

Track of Words

A treat for nerds [with] a focus on genetic engineering and reversing extinction

Sifa Elizabeth Reads

Absolutely fascinating! If you're a fan of Jurassic Park, Tahereh Mafi & Marie Lu's work, then this is the perfect book for you!

A Bookish Star

I really liked this book. Right from the start the story drew me in . . . I can't wait for the next book

Mugful of Books

So enjoyable and a super fast read . . . Made me feel proud of being a STEM girl . . . Go read this book for the adventure and discovery!

REBIREADS

This is one of the rare debuts that are really five star reads. Subject Twenty One grabbed me instantly and I couldn't put it down

DOMREADS

I absolutely devoured this book . . . Warren did a perfect job of pulling me in and answering some of my questions, but leaving enough of it unanswered so that I want more . . . and I definitely do! I can't wait for the next instalment!

Elle Reads Books

This book quickly made its way into my heart as the first book that included sign language throughout . . .I was honestly could have continued to read it indefinitely, such is the excellent craftsmanship of the story and the pull in the emotions.

Lauren Sparks

Now THIS is a book I really enjoyed . . . covers some really great themes that are both topical and interesting. Social psychology, anthropology, paleontology, bias, racism, ethics - it's got it all!

Horner's Book Corner

Fascinating . . . has twists & turns & even broke my heart into tiny little pieces. I'd recommend this to fans of the Hunger Games, Maze Runner & Ready Player One.

BOOKIEMAMABEAR

This Jurassic Park-esque concept grabbed me immediately . . . a fresh, gripping read with themes of suspense, trust, ethics and friendships

Book Phenomena

A stonking good sci-fi & coming-of-age story all wrapped into one . . . a book that tackles humanity, hardship, and classism at the deepest level.

Magic Radio Book Club

An unputdownable exploration into the ethics of science

Buzz Magazine