Secret Seven 6 books

The Secret Seven are siblings Peter and Janet, and Jack, Barbara, Pam, Colin and George. Togetherا they are The Secret Seven - ready to solve any mystery, any time - in Enid Blyton's classic series of 15 mystery novels.     

 Peter and Janet think Old Mill is perfect for their Seven Society meetings - until they make a startling discovery about some stolen goods. So the gang hatch a plan to wait for the thieves to come back ..