Enid Blyton eighth book in the Adventure series, "The River of Adventure", and her seventh Secret Seven novel, "Secret Seven Win Through". She completed the sixth and final book of the Malory Towers series, "Last Term at Malory Towers", in 1951. Blyton published several further books featuring the character of Scamp the terrier, following on from "The Adventures of Scamp", a novel she had released in 1943 under the pseudonym of Mary Pollock. "Scamp Goes on Holiday" (1952) and "Scamp and Bimbo", "Scamp at School", "Scamp and Caroline" and "Scamp Goes to the Zoo" (1954) were illustrated by Pierre Probst. She introduced
Enid Blyton Brothers. Other books with a maritime theme include "The Secret of Cliff Castle" and "Smuggler Ben", both attributed to Mary Pollock in 1943; "The Island of Adventure", the first in the Adventure series of eight novels from 1944 onwards; and various novels of the Famous Five series such as "Five on a Treasure Island" (1942), "Five on Kirrin Island Again" (1947) and "Five Go Down to the Sea" (1953). Capitalising on her success, with a loyal and ever-growing readership, Blyton produced a new edition of many of her series such as the Famous Five, the Five Find-Outers and St. Clare's