Callum Knight
At just 16, Callum wrote The Secrets of My Spectrum, a powerful first‑person journey through life on the autism spectrum.
The book became a #1 Best Seller in multiple Amazon UK categories, including Biographies of People with Disabilities, Children’s Autism Spectrum, Educational Strategies & Policies, Educational Reference, and Psychology.
Its honesty and clarity have resonated with families and neurodivergent readers around the world, establishing Callum as a trusted voice in autism advocacy.
He has since released the follow‑up, More Secrets of My Spectrum: Autism into Adulthood, continuing his story with the same warmth and insight.
Callum has also expanded into children’s publishing, creating two gentle, inclusive picture books filled with comforting stories and engaging activities.
To connect with Callum, you can find him on Facebook at “Callum Knight Autism” or email thesecretsofmyspectrum@gmail.com.
If you are interested in Callum’s children’s books, click below:
Some reviews
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"Thank you, Callum. This book has been so important for my 13 year old son and I. It is the first book about autism he has wanted to engage with, and it has really helped us have open conversations. "
— RW (Amazon Customer)
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" This book is very good and helps me understand my daughter's autism."
— Paula (Amazon Customer)
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" I got this book after hearing about it on social media. I have been reading it every night with my 7-year-old, who is autistic, specifically with Pathological Demand Avoidance. He has found it very reassuring that other children have felt the same as him, and I find it invaluable to understand how he views the world. As he grows into a teenager, it will really help him. Great book. "
— Mrs T Flower (Amazon Customer)
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"It is an insightful resource that would greatly enhance the quality of support and understanding and foster greater inclusion. Thank you."
— Brian, Autism Support Community
Amazon #1 Best Seller
The Secrets of My Spectrum: A Teen’s Journey with Autism (Age 11+)
Written at just sixteen, The Secrets of My Spectrum is Callum Knight’s bestselling debut — a candid, jargon-free exploration of life on the autism spectrum. Diagnosed at thirteen, Callum brings readers into his world with short, heartfelt chapters that illuminate everyday realities: sensory overload, shutdowns, stimming, anxiety, and the complexities of social life.
With the same honesty that has resonated with families, educators, and autistic readers alike, this book offers a rare glimpse into teenage experiences of autism, told entirely from a first-person perspective.
Whether you are autistic yourself, supporting a child, or working in education and care, this book provides:
- Insight into how sensory challenges and shutdowns feel from the inside
- Understanding of stimming and soothing behaviours as tools for self-regulation
- Practical reflections on anxiety, social situations, and coping with change
- Genuine accounts of empathy, special interests, and what makes “good days” truly good
Callum’s writing is not about clinical definitions or easy fixes. It’s about clarity, connection, and the everyday truths of growing up autistic. Warm, relatable, and highly rated by parents, teachers, and the autism community, The Secrets of My Spectrum continues to inspire readers worldwide.
Accessibility & Editions
- Notes pages after each chapter — to personalise support
- Large-print edition — for dyslexic and visually impaired readers
- Available in paperback, ebook, audiobook, and bundle saver formats.
- Bundle saver available
Why Readers Love It
- Authentic voice of an autistic teen
- Clear, everyday language — no medical jargon
- Bestseller in multiple Amazon categories
- Backed by hundreds of glowing reviews
All profits go directly to the author.
Just Released!
(Age 14+)
Following the success of his bestselling debut, The Secrets of My Spectrum — written at just sixteen years old — Callum Knight continues his journey in More Secrets of My Spectrum: Autism into Adulthood. With the same heartfelt honesty that captivated readers worldwide, this sequel explores what it means to grow up autistic, moving from teenage years into adult life.
Reflecting on his experiences up to the age of twenty-one, Callum shares candid insights into education, independence, and self-employment, alongside the challenges and triumphs of navigating adulthood on the spectrum. His reflections are practical, deeply relatable, and filled with moments of discovery.
Whether you are autistic yourself, supporting a loved one, or working in education and care, this book provides:
- A rare first-person perspective
- Honest accounts of struggles and successes
- Practical strategies for thriving with autism
- Encouragement and clarity for families, professionals, and autistic readers alike
- Notes pages after each chapter — for families and educators to personalise support
Accessibility & Editions
- Notes pages after each chapter — to personalise support
- Large-print edition Coming Soon! — for dyslexic and visually impaired readers
- Available in signed paperback, ebook, and bundle saver formats.
Callum’s story is not about perfection or easy answers. It’s about resilience, discovery, and the everyday realities of living authentically. Just as his debut gave comfort and clarity, this new book offers hope and encouragement for anyone seeking to understand autism beyond childhood.