When their old shed gets a spring clean the Secret Seven have to find a brand new meeting place for the holidays. But no sooner have they found it and settled in than they realise somebody else has been using it too. How dare they? Whoever it is going there at night, and the gang are going to put a stop to it! Scamper gives them their first important clue when he sniffs out a stranger's notebook, and when they read it they realise there's no time to waste. They're determined to catch the mysterious visitor, whatever it takes. So it's time for the Seven to set a trap and see what happens! Enid Blyton is one of the best-known and best-loved authors of all time. In polls, she is consistently voted a children's favourite, and over a million of her books are borrowed from libraries each year. She wrote over 600 children's books, including the bestselling "Famous Five and Secret Seven" series.