Novels
The Riddle of the Hollow Tree
The Riddle of the Rajah's Ruby
The Riddle that never was
The Secret Mountain
The Secret of Moon Castle
The Secret of Spiggy Holes
The police in Portugal have asked...
The Secret Seven
The Secret Valley
During Mr. Hardy’s investigation of a...
The Stolen Relic
THE THIRD WHEEL
THE UGLY TRUTH
Frank and Joe Hardy find a mystery and...
The Wind in the Willows
There is no time for explanations when...
There is no time for explanations when...
Three Cheers, Secret Seven