What do you get when you cross Welsh Tales of Terror and Zardoz?
Now I think of it, you get the cover of Tales of Terror from Outer Space.
It never occurred to me that there would be a Welsh companion volume. How silly of me.
Although I still own the book, I swiped the image above from Encyclopedia Phantasmagoria, which is a "Guide to the Fontana Ghost, Horror & Tales of Terror series". So there are plenty of covers there.