Okay, back in the Dark Ages, as a young teenager, I was reading everything sci-fi I could get my hands on. Didn’t matter who the author was, or what it was about, I read it. Should have kept the books but didn’t. Now I’m trying to remember the title and author of one book in particular. Here’s what I remember.
A Jesuit priest is a main character, I don’t remember his name. He’s a missionary, or traveler, or something. He finds a planet with intelligent life, like big lizards. I can’t remember why, but he determines they are evil and performs an exorcism on the entire planet. And it just disappears, if I remember correctly. The title and author are on the tip of my tongue, and I’m sure I’ll recognize one or the other when I see them.