These are two books part of the five book Vampire saga by Brian Lumley, one of the best sci-fi /horror novels of the past century and I got them for a great price on ebay. We'll see how it goes, I already read the first one several decades ago but I never got my hands in the next issues, now I only need the other three!
Oh, hell yeah! This stuff right here's my jam, dude. Those old Tor covers are beautiful. Is The Source a UK edition? I'm not familiar with that cover artwork.
Right there, made in Glasgow it is the UK version, first print, 1989. Still in the first book but man, I love how he writes and how the story is developing. I don't have much time to read at the moment but so far, great book.