Series reading guide · updated 2026
Enid Blyton Secret Series Books in Order
Every Enid Blyton Secret Series book in publication order — 6 in total, spanning 1938–2016.
Publication Order of The Secret Books
| # | Title | Year | Get it |
|---|---|---|---|
| 1 |  The Secret Island | 1938 | Amazon US UK |
| 2 |  The Secret Of Spiggy Holes | 1940 | Amazon US UK |
| 3 |  The Secret Mountain | 1941 | Amazon US UK |
| 4 |  The Secret Of Killimooin | 1943 | Amazon US UK |
| 5 |  The Secret Of Moon Castle | 1953 | Amazon US UK |
| 6 |  The Secret Valley | 2016 | Amazon US UK |
Every title by year All 6, oldest to newest
| # | Title | Year | Get it |
|---|---|---|---|
| 1 | The Secret Island | 1938 | Amazon US UK |
| 2 | The Secret Of Spiggy Holes | 1940 | Amazon US UK |
| 3 | The Secret Mountain | 1941 | Amazon US UK |
| 4 | The Secret Of Killimooin | 1943 | Amazon US UK |
| 5 | The Secret Of Moon Castle | 1953 | Amazon US UK |
| 6 | The Secret Valley | 2016 | Amazon US UK |
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