Ruth’s old friend Dan Golding dies in a house fire. But before he died Dan wrote to Ruth telling her that he had made a ground-breaking archaeological discovery. Could this find be linked to his death and who are the sinister neo-Nazi group who were threatening Dan? Ruth makes the trip to Blackpool to investigate, wary of encroaching on DCI Harry Nelson’s home ground. Soon Ruth is embroiled in a mystery that involves the Pendle Witches, King Arthur and — scariest of all — Nelson’s mother.
There are forces at work in the town that threaten all that Ruth holds dear. In the final showdown on Blackpool Pleasure Beach, Cathbad faces the greatest danger of all.