The Shadow People

Jerry Pardoe and Jamila Patel hunt down a ritualistic cult inspired by Neolithic cannibals in the new chilling horror from Graham Masterton.
Det. Sgt. Jamila Patel and Det. Con. Jerry Pardoe have reluctantly acquired a reputation in the Metropolitan Police for their ability to tackle bizarre and apparently supernatural crimes. Now they have been called back together after three bodies are found in a London basement... bodies which have been taken apart, roasted and eaten.
The markings on the wall suggest this might have been done by some kind of religious cult and as more people are kidnapped and cannibalised, Patel and Pardoe realise they are dealing with a group of devil-worshippers invoking an ancient god who has not been worshipped since the Neolithic age...