The Crawling Dark

"In 1992, Koontz filed suit against Zebra Books for the misappropriation of Phantoms in two titles Zebra published by author "Pauline Dunn" (in actuality sisters Dawn Pauline Dunn and Susan Hartzell collaborating under a pen name). Spotted by a reader who informed Koontz's publisher, the two books in question - The Crawling Dark and Demonic Color - mimicked Phantoms extensively and even copied passages word-for-word. The legal team for Koontz won, resulting in the sisters returning their advances for both books and Zebra placing an ad in Publishers Weekly acknowledging the plagiarism and withdrawing both titles." [info from: https://en.wikipedia.org/wiki/Phantoms_(novel)]