The Palace

From Author Wars - https://authorwars.com/publications/the-palace-175891.html

Overview:

Title: The Palace
Author: Chelsea Quinn Yarbro
Year: 1979
ISBN-10: 0312594747
Publisher: St. Martin's Press
Price: $9.95
Pages: 408
Binding: Hardcover
Type: Novel
Title Reference: The Palace
Notes: This is copyrighted 1978, but didn't appear until February 1979, according to Locus #219 (February 1979). It is also dated 1979 on the author's official website. Reginald3 gives this date as 1978.