McIlvaine's Star by August Derleth, Science Fiction, Fantasy (Hardcover) (ISBN-13: 9781463896720)

"I've done it," McIlvaine said quietly. "What's that?" asked Alexander testily. "I discovered a new star. It lies just off Arcturus," McIlvaine went on, "and it would appear to be coming closer." "Give it my love," said Richardson with a wry smile. "Have you named it yet? Or don't the discoverers of new stars name them any more? McIlvaine's Star -- that's a good name for it. Hard a port of Arcturus, with special displays on windy nights." What Thaddeus McIlvaine and Alexander Richardson didn't realize was that they were characters in a horror story. A story written by August Derleth, the man who founded Arkham House. None of these folks knew it yet, but they're all DOOMED! Doomed! Mwahahahaha!