They Used Dark Forces

From Author Wars - https://authorwars.com/publications/they-used-dark-forces-489897.html

Overview:

Title: They Used Dark Forces
Author: Dennis Wheatley
Year: 1977
ISBN-10: 0099072602
Publisher: Arrow Books
Price: £0.90
Pages: 511
Binding: Paperback
Type: Novel
Title Reference: They Used Dark Forces
Notes:
• Similar to the 1974 edition but with the typeface on author's name and spine in green.
• Data from authors website.