The Ninth Configuration

From Author Wars - https://authorwars.com/publications/the-ninth-configuration-916021.html

Overview:

Title: The Ninth Configuration
Author: William Peter Blatty
Year: 1978
ISBN-10: 0060103590
Publisher: Harper & Row
Price: $7.95
Pages: 135
Binding: Hardcover
Type: Novel
Title Reference: The Ninth Configuration
Notes: Info from Archive.org copy; "Jacket design by Paul Gamarello" on back flap. The only mention of the 1966 novel, Twinkle, Twinkle, "Killer" Kane, that this novel was revised from, is a 2-paragraph author's note preceding the novel.