I remember reading several of those short Five series books by Enid Blyton (as a Norwegian kid in pre-Internet days I assumed the author was a man) in Norwegian translation when I was 10-12, I suppose. What I most remember was the sexual tension in them, perhaps due to the focus on excitement, adventure, gender roles, transgressions, getting locked up in dark dungeons, kidnappings etc. by a mixed group of boys and girls coupled with a puritanical and prudish restraint typical of Britain in that age. And if I don't remember too wrong there were rather detailled descriptions of the looks of these kids and the adults they encountered.
To sum it up it was like: Here we have a group of beautiful blond children frolicking wildly (nude?) on a deserted beach when suddenly one of them falls into a dark dungeon dug by evil, predatory, swarthy robbers. Will he or she be saved or will he / she be left to the dark desires of the robbers who will have their way with him / her before his / her brave and beautiful friends can rescue her?
Entertaining, but gave young pre-pubescent me some strange ideas.....
I think the sexual aspect came off so strongly because these books had no other theme, like other children's books which were about friendship, family, imagination, good vs. evil, finding yourself, knowledge, moral dillemmas, love, life, death etc. These books were only about transgressive adventures, with a cast of children that made no impression on the reader except their physical presence and agility. In short these books were like a children's version of the works of Marquis de Sade's!