The Secret Seven short story titled "The Secret of the Old Mill". It followed an earlier short story, "At Seaside Cottage", which introduced the leading characters Peter and Janet prior to the formation of the society. There followed a further five short stories and fifteen full-length books. The Secret Seven appeared in seven short stories by Blyton, including a mini-novella explaining how the society was formed. These were left uncollected until 1997, when all but "At Seaside Cottage" were published in a single volume by Hodder Children's Books under the title of "Secret Seven: Short Story Collection". Scamper – Janet and Peter's pet
Enid Blyton between 1942 and 1964; 10,000 copies were sold in 1942 alone. The same year, Blyton published the first novel in the Famous Five series, "Five on a Treasure Island", with illustrations by Eileen Soper. Its popularity resulted in twenty-one books between then and 1963, and the characters of Julian, Dick, Anne, George (Georgina) and Timmy the dog became household names in Britain. Matthew Grenby, author of "Children's Literature", states that the five were involved with "unmasking hardened villains and solving serious crimes", although the novels were "hardly 'hard-boiled' thrillers". Blyton based the character of Georgina, a tomboy she described as