Black Ops — Christopher Bryan

A thirty-year-old covert operation suddenly flares into horrifying life as those who took part in it are targeted one by one for death. But who is doing the targeting? And why the killing spree now? In this, their sixth adventure, the quest for answers to these questions leads Detective Superintendent Cecilia Cavaliere, her husband Anglican priest Michael Aarons and her colleagues on a complicated and at times dangerous quest.