Enid Blyton every year in addition to many other novels, short stories and books. In 1946 Blyton launched the first in the Malory Towers series of six books based around the schoolgirl Darrell Rivers, "First Term at Malory Towers", which became extremely popular, particularly with girls. The first book in Blyton's Barney Mysteries series, "The Rockingdown Mystery", was published in 1949, as was the first of her fifteen Secret Seven novels. The Secret Seven Society consists of Peter, his sister Janet, and their friends Colin, George, Jack, Pam and Barbara, who meet regularly in a shed in the garden to discuss peculiar
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