The Secret Seven have a brand new meeting place but somebody else has been using it too. How dare they? Whoever it is is going there at night, and the gang are going to put a stop to it! They are determined to catch the cheeky intruder, whatever it takes... About The Author Enid Blyton died in 1968 but remains one of the best-known and best-loved writers of children's stories. She is consistently voted a children's favourite in author polls. She has over 600 children's books to her credit, including the Famous Five series, the Secret Seven series, the Naughtiest Girl series - all Hodder - and the Malory Towers and St Clare's series, both available from Hodder on audio.