The Secret Seven or "Secret Seven Society" are a fictional group of child detectives created by Enid Blyton. They appear in one of several juvenile detective series Blyton wrote. The Secret Seven consists of Peter (the society's leader), Janet (Peter's sister), Jack, Barbara, George, Pam and Colin. Jack's sister Susie and her best friend Binkie often make an appearance in the books; they hate the Secret Seven and delight in playing tricks designed to humiliate them, although much of this is fuelled by their almost obsessive desire to belong to the society. Unlike most other Blyton series, this one takes place during the school term time because the characters go to day schools.