Puzzle for the Secret Seven/Secret Seven Fireworks/Good Old Secret Seven is a series of books by the famous English writer Enid Blyton and has been highly popular amongst children all over the world. This book is not one, but 3 intriguing adventure stories involving the Secret Seven, namely Puzzle for the Secret Seven, Secret Seven Fireworks and Good Old Secret Seven.

In Puzzle for the Secret Seven, the members of the Secret Seven, namely Peter, Janet, Jack, Pam, Barbara, Colin, George and Sc...amper, their pet dog, witness a house being set ablaze and burnt to ashes. and then, quite mysteriously, an invaluable violin is stolen. The question that faces the mystery-solvers is: could the two seemingly disconnected incidents be related?

In Secret Seven Fireworks, the seven children are first stunned when they discover that Jack's sister Susie has formed a group of her own which she named the Tiresome Three. Susie might be quite annoying at times, but she is still the sister of Jack and a member of the Secret Seven. Find out how the group deals with this fiasco.

Good Old Secret Seven finds the seven children entangled in yet another spine-tingling mystery. This one begins with the tale of some unnamed people hiding in the Torling Castle, which is in a ruinous condition. on alert, the Secret Seven loses no time in following the trail to find out who that unknown person is. But the annoying Susie and Binkie keep interfering in their work. Meanwhile, the boys discover that there is a gang which steals precious stuff and unframed paintings and successfully stop them.