Dear All,
I am re-reading a, Very interesting, book called Incubus- by Ray Russell. I first read it, whilst I was at my Boarding School, in the Seventies (it was first published in 1976, in the UK anyway). It is Both a, very superior 'Whodunnit', and a Very thought provoking Supernatural Thriller. It was last published in 1983, so I had to 'Find' it on eBay. Apparently, according to the Book's Cover, it is also a Film- though I have never seen, or heard, of it.
If you can, like me, 'locate' a copy- I paid about £6, I think- then it is Well Worth a read. It is a Very 'well written' book, though the Author is American. (Perhaps a few Phrases we wouldn't use, over here.) I'm certainly enjoying my Re-read.
AndrewT