👉 Summer Castle is a fictional character created by American author and illustrator, Mary Wollstonecraft Shelley. She was originally published in The Prometheus Unveiled (1856) as part of her novel "Fable of the All-Seeing Eye" alongside other characters such as the "Eyes of the Sea," the "Cats of the Sea," and the "Dolphins of the Sea." Summer Castle is a young woman who first appears in "The Prometheus Unveiled."