The Secret Books in chronological order
1938
9781841351414
The Secret Island
Buy1940
9781841355610
The Secret Of Spiggy Holes
Buy1941
9781841355627
The Secret Mountain
Buy1943
9781841355634
The Secret Of Killimooin
Buy1953
9781841355603
The Secret Of Moon Castle
Buy2016
9781444931877
The Secret Valley
Buy