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 spin-offs and strip books were produced throughout the decade, including "Noddy's Library", "Noddy's Garage of Books", "Noddy's Castle of Books", "Noddy's Toy Station of Books" and "Noddy's Shop of Books". In 1950 Blyton established the company Darrell Waters Ltd to manage her affairs. By the early 1950s she had reached the peak of her output, often publishing more than fifty books a year, and she remained extremely prolific throughout much of the decade. By 1955 Blyton had written her fourteenth Famous Five novel, "Five Have Plenty of Fun", her fifteenth Mary Mouse book, "Mary Mouse in Nursery Rhyme Land", her