A retired teacher and her friend are caught up in a mystery when they visit Glastonbury, one of Britain's most fascinating historical sites... Hilary is a recently retired teacher, and with time on her handsand her husband away doing volunteer work in war-torn Gazashe needs a distraction. So she invites her good friend Veronica, a recent widow, to accompany her on a trip to Glastonbury, to see the ancient sights. The pair is saddened to discover that the sacred Glastonbury Thorn tree has been severely damaged, and they wonder whether other local historic sites are under threat too. But they are unprepared for the shocking discovery Hilary makes at the Chalice Well: an abandoned bag, containing a bomb... Who is to blame? A foreign tourist? An eccentric pagan author? Or an angry local who resents that a Christian place has been ';overrun' by other beliefs? Hilary and Veronica just want to enjoy their holiday, but they're about to be pulled into a mystery.. .