Duncan Kincaid has settled into his life as part-time father to Kit, the twelve-year-old son he only recently discovered. But life has more changes in store - Gemma has pursued a promotion that ends their partnership on the job and places their personal relationship on a new, more tentative footing. So when Duncan's cousin - Jack Montfort - and childhood friend calls from Glastonbury to ask his help on a rather unusual matter, he welcomes the opportunity to get out of London - and to spend a relaxing weekend with Gemma. But relaxation isn't on the agenda. Something terrible and bloody shattered the Abbey's peace long ago, according to Montfort's newly discovered history. And that knowledge will spark a violence that reaches into the present. When a member of Jack's circle is attacked and left for dead, he appeals to Duncan to find the truth the local police cannot see. None of them envisions the peril that lies ahead, or that there is more at stake than either Duncan or Gemma dreamed possible.