The new girl Darrell Rivers faces challenges and adventures at Mallory Towers, in the popular series by Enid Blyton. In the seventh book, Darrell has left Mallory Towers, and her sister Felicity takes over the role of head girl. However, the other girls are determined to cause trouble. Will Freddie and June ever stop playing pranks? And what is Amy's strange family secret? More action and twists at Mallory Towers!

From 1946 to 1951, Enid Blyton wrote six novels set at Mallory Towers. Books 7-12 are approved sequels to the series, written by Pamela Cox in 2009, focusing on the adventures of Felicity Rivers, Susan Blake, and June Jones. This edition is without illustrations.