A Finer End by Deborah Crombie
Jack Montfort grew up in the shadow of Glastonbury Tor in a town revered as the mythical burial place of King Arthur, and, according to New Age followers, a source of strong druid power. Montfort has little more than a passing interest in the history of the area - until he comes across an extraordinary chronicle almost a thousand years old . . . When a member of Jack's circle is attacked and left for dead, he appeals to his cousin, Superintendent Duncan Kincaid, for help. For something terrible and bloody shattered Glastonbury Abbey's peace long ago - and now it is about to spark a violence that will reach forward into the present . . .