The Secret Seven short story titled "The Secret of the Old Mill". It followed an earlier short story, "At Seaside Cottage", which introduced the leading characters Peter and Janet prior to the formation of the society. There followed a further five short stories and fifteen full-length books. The Secret Seven appeared in seven short stories by Blyton, including a mini-novella explaining how the society was formed. These were left uncollected until 1997, when all but "At Seaside Cottage" were published in a single volume by Hodder Children's Books under the title of "Secret Seven: Short Story Collection". Scamper – Janet and Peter's pet
The Mystery of the Invisible Thief The Mystery of the Invisible Thief The Mystery of the Invisible Thief is a novel written by Enid Blyton. It is the 8th in the popular "The Five Find-Outers" mystery series also known as the "Five Find-Outers and Dog". The Five Find-Outers are having a chance tea at a local gymkhana with Inspector Jenks and his goddaughter Hilary when a robbery occurs in a nearby large house. The mysterious robber disappears from the scene of the crime without a trace - as if he were invisible and cannot be found. The robbed house turns out to be that of Hilary,