They Used Dark Forces
From Author Wars - https://authorwars.com/publications/they-used-dark-forces-615407.html
Overview:
- Title: They Used Dark Forces
- Author: Dennis Wheatley
- Year: 1964
- Publisher: Hutchinson
- Price: 21/-
- Pages: 511
- Binding: Hardcover
- Type: Novel
- Title Reference: They Used Dark Forces
- Notes: "Jacket design by Mortelmans" on back cover in FantLab photo.