The Secret Seven are siblings Peter and Janet, and Jack, Barbara, Pam, Colin and George. Together they are The Secret Seven - ready to solve any mystery, any time - in Enid Blyton's classic series of 15 mystery novels.In book eight, Peter and Jack go looking for their lost model aeroplane in an old abandoned house and find a lit fire in one of the rooms. Who is living there, and whyLooks like t…