George is not pleased when Berta, a spoilt American girl, turns up at Kirrin Cottage in the middle of the night - dressed in disguise! But George hasn't got time to be jealous. Berta is in hiding from kidnappers, and she needs help. The Famous Five are the only ones who can protect her - but will they risk danger to themselves to help out a virtual stranger?

Enid Blyton, who died in 1968, is one of the most popular and prolific children�s authors of all time. She wrote over seven hundred books, which have been translated into many languages throughout the world. She also found time to write numerous songs, poems, and plays, and ran magazines and clubs.