
BOOK 1 - Amazon #1 UK Best Seller
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:
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
Why Readers Love It
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BOOK 2 - Just released
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:
Accessibility & Editions
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.
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Signed Book
Large Print
£9.95
Bundle deals are available when you add a second book to your cart.
ISBN (Paperback): 978-1916258600
Page count: 154
Publication date: Dec 2019
ISBN (Paperback): 978-1917514187
Page count: 165
Publication date: Dec 2025
These books are available at the British Library