 Out of the Silent Planet, the first of this trilogy, had preceded it in 39, and That Hideous Strength, which is really a standalone thing, in 45, I think, was the third book. I think of it as the Ransom trilogy because of the hero Ransom appearing in all three. So let's call it the Ransom trilogy. So the middle book, and you say it was Lewis's favorite book, and boy, he wrote a lot of books. He did. It's called Paralender. So it's a novel.