The Secret of Moon Castle
by Enid Blyton | 
The Secret of Killimooin
by Enid Blyton | 
The Secret Mountain
by Enid Blyton | 
The Secret of Spiggy Holes
by Enid Blyton | 
The Rockingdown Mystery
by Enid Blyton | 
The Secret Seven
by Enid Blyton | 
Five Go to Smuggler's Top
by Enid Blyton | 
The Mystery of the Burnt Cottage
by Enid Blyton | 
Five on a Treasure Island
by Enid Blyton |
The Mystery of the Secret Room
by Enid Blyton | 
Puzzle for the Secret Seven
by Enid Blyton | 
Fun for the Secret Seven
by Enid Blyton | 
Secret Seven on the Trail
by Enid Blyton |
The Mystery of Holly Lane
by Enid Blyton |
Five Go Off to Camp
by Enid Blyton | 
The Valley of Adventure
by Enid Blyton | 
The Circus of Adventure
by Enid Blyton | 
The Sea of Adventure
by Enid Blyton | 
The Ship of Adventure
by Enid Blyton | 
The River of Adventure
by Enid Blyton |
Four runaways, Mike, Peggy, Nora and Jack, find a secret hiding place - a deserted island on a lovely lake. They build a willow-tree house, make their beds of heather and bracken, and grow their own vegetables. And Jack even manages to bring his cow, Daisy, and some hens to the island for fresh milk and eggs every day! But one day invaders come to the secret island...