The Brightside Mission. Chateau Sarony, #9

It is November 2015 when Martin and Anna Price are asked to research the history of a medieval seal acquired by a United States senator on eBay. Although this takes them away from Sarony, they see it as a welcome respite from the huge workload they have struggled with following the momentous events of the summer. Their colleague, Nikki Prendergast, accompanies them to England to attend her father's fiftieth birthday celebration and stays with them when they journey to Devon to meet with the dealer who sold the seal.
All appears as expected - a quiet and undemanding exercise in historical research for a friend - until to Anna's dismay they find a former colleague of Martin's is staying at the same hotel. Suzie Brightside, a serving member of British Military Intelligence, is engaged on a mission relating to the theft of data from the heart of the intelligence service. As a result, Anna, Martin and Nikki find themselves drawn into a dangerous and complex web of murder and intrigue.
The murder of a lonely eccentric woman at her farm near Northmere is followed by an unforeseen helicopter raid on the property. An old private girls school in the nearby village of Camberdown becomes linked to the mystery which moves through Bristol, Bromley and finally, the centre of London. The data is still missing, however, so where is it and is there a third party involved who has remained hidden throughout?