Julian, Dick and Anne are thrilled and curious when they discover that they are going to be spending the summer holidays with an unknown cousin, in a cottage beside the sea! George is a strange girl, who won't answer to her full name: Georgina, and though at first she isn't pleased that she has got company - little does she realize the excitement ahead, that will involve her very own island, a mysterious map, and a wreck thrown up in a storm! Alongside George's dog, Timmy (who is a strictly concealed secret amongst the children), the children have some truly breath-taking adventures in this first, fantastic Famous Five book!