The very first Famous Five adventure, featuring Julian, Dick, Anne, not forgetting tomboy George and her beloved dog, Timmy! There's a shipwreck off Kirrin Island! But where is the treasure? The Famous Five are on the trail – looking for clues – but they're not alone! Someone else has got the same idea. Time is running out for the Famous Five, who will follow the clues and get to the treasure first?

Ana y sus hermanos Julián y Dick, van de vacaciones a casa de sus tíos Fanny y Quintín. La casa se encuentra en la hermosa bahía de Kirrin, con una isla y un viejo castillo propiedad de la familia. Allí también está su prima Jorgina, una niña de fuerte carácter a la que le gustaría ser un chico, por lo que prefiere que la llamen Jorge. Pronto los cuatro niños se hacen muy amigos y se convierten en un grupo inseparable, acompañados siempre por el perrito de Jorge, Tim. Un día, en un viejo navío, los chicos descubren el mapa de un tesoro escondido en la isla. Se disponen a encontrarlo, ¡pero no son los únicos que lo buscan! ¿Podrán conseguirlo antes de que sea demasiado tarde?

Who could have set fire to Mr Hick's cottage? The suspects include a tramp and even the housekeeper, Mrs Minns. The Five Find-Outers and Dog aim to solve the mystery before Mr Goon, the grumpy policeman.

Luke was working in the garden when Lady Candling's valuable cat was stolen. But could it have been the cat's carer, Miss Harmer, or even Lady Candling's companion Miss Trimble? The Five Find-Outers and Dog are on the case!

Fatty astonishes Mr Goon with his wonderful disguises, while he tries to discover who is using Miss Crump's old house and why. Inspector Jenks will help the Five Find-Outers again. And there's a surprise for Mr Goon!

Someone is sending spiteful letters. Gladys and Mrs Moon are terribly upset. There are lots of suspects it could be gossipy Miss Tittle or Old Nosey, a very curious man. The Five Find-Outers and Dog will find the culprit!

Fatty's disguises are better than ever. No one recognises him as a balloon seller, or as the old man in the village. Burglaries are going on and the police are baffled. It's a new mystery for the Five Find-Outers and Dog!