Five Have Plenty of Fun by Enid Blyton
Published March 18, 2023

This was a change from the normal adventures that this gang get up on, this time they are very much based at home at Kirrin Cottage and the trouble comes to them. A good half of the book is based around their new visitor Berta and getting her settled in, appearance changed, and witness protection set up. The second half of the book is chasing after the kidnap that eventually happens and you do think the kids should probably leave it to the police but they do manage to scrape together an effective rescue - hooray!