Author
Callum Knight: A Teen Voice
Callum Knight wrote The Secrets of My Spectrum at just sixteen years old—a raw and insightful memoir that quickly became a UK bestseller.
Frustrated by how autism was often portrayed in books and on screen, Callum set out to tell the story no one else was telling.
He wanted families, teachers, and caregivers to understand not just the behaviours associated with autism, but the reasons behind them—the fear, the overwhelm, the logic, and the silent strength that so often goes unnoticed.
The Secrets of My Spectrum
#1 UK Best Seller by Callum Knight (age 16)
“This book should be in every school, library, diagnosis centre, and therapist’s office.”
— Brian, Autism Support Community
Written with striking honesty and insight, The Secrets of My Spectrum takes readers inside the mind of 16-year-old Callum Knight as he shares what it’s really like to be autistic. From being largely silent as a child to finding his voice as a teenager, Callum offers a powerful first-person perspective that challenges stereotypes and deepens understanding.
He explores anxiety, communication, social situations, special interests, and the unexpected challenges autistic people face—all told with warmth, clarity, and a touch of humour.
Each chapter ends with space for readers to reflect, journal, or make notes; Ideal for autistic teens, parents, educators, and professionals alike, this book bridges the gap between clinical knowledge and lived experience.
A heartfelt, eye-opening guide to understanding autism—from someone who lives it every day.
The Secrets of My Spectrum has reached #1 Best Seller in more than 4 Amazon categories.
Backed by hundreds of glowing reviews. This book is a must-read for parents, SENCOs, and educators.
Table of Contents
INTRODUCTION
COMMUNICATION
TRAVEL
SOCIALISATION
FOCUS
ANXIETY
SOOTHING BEHAVIOURS/STIMULING
EMPATHY/ACCEPTING GIFTS
EDUCATION
MELTDOWNS/SHUTDOWNS
OVERTHINKING SENSORY CHALLENGES
APPOINTMENTS
LITERAL/VISUAL THINKING
UNEXPECTED SITUATIONS
SPECIAL INTERESTS
GOOD DAYS AND BAD
CONCLUSION
AUTHOR
CRISIS & HELPFUL PEOPLE
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Narrated by Nick Denton
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Signed Large Print £8.95
1. Easier to Read for People with Visual Stress or Eye Conditions
- Larger font reduces eye strain, especially for people with dyslexia, glaucoma, or age-related vision issues.
2. Neurodivergent-Friendly
- Many autistic, ADHD, or PDA readers find increased spacing and larger text less overwhelming and easier to focus on.
3. More Comfortable for Long Reading Sessions
- The gentler visual experience is ideal for people who fatigue quickly when reading smaller print.
4. Suitable for Young or Reluctant Readers
- Teen readers, especially those with SEN (special educational needs), often prefer large print to help them stay engaged.
5. Accessibility Without Compromise
- Large print editions keep all the original content but present it in a more inclusive way — no abridging necessary.
Bundle & Save! Signed Copies
The PDA Effect & The Secrets of My Spectrum
Teen voices share their experiences of Autism and PDA (pathological Demand Avoidance)
Both Signed Paperbacks Bundle £15.49
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Books for young children
Callum's Children's Stories
What began as a personal mission has since evolved into a powerful tool for raising awareness and fostering understanding. Five years on, The Secrets of My Spectrum continues to be a lifeline for those seeking to understand the autistic experience better, from the inside out.
Since then, Callum has also written and illustrated two children's books that embody his trademark authenticity and empathy, allowing young readers to see themselves reflected in the pages and feel seen, heard, and valued.
Now in his twenties, Callum is currently working on his highly anticipated second memoir, set to release in 2025—a continuation of his journey and a deeper dive into life as an autistic young adult.
For Callum's children's books, you can click below.