The Secret Garden story is indeed for children, but still fun for adults to read. The storyline is predictable, but it's still fun to follow the details of Mary Lennox's adventures and the mysteries that are revealed little by little. The ending is easy to predict, but that doesn't reduce the fun of following the story to the end. Moreover, this story has been made into a film several times. Watching the movie trailer and also seeing some photos from the 2020 film helps visualize this novel.