The serial murders of Fred and Rose West are being linked to the occult by Irish author Jim Cairns.
The article refers to Cairns as "renowned," but I can only find two books under his name at Amazon.co.uk and neither seems to be in print or have any reviews.
Also, the article seems link these murders to ritual satanic abuse, which I'm very skeptical about. However, I don't think it would be that hard to show the occult ties of people who keep bodies under their house and cut off fingers as souvenirs.