When Georgia and Peter Marsh encounter a group of weirdly dressed "pilgrims" about to set out along the Old Road to Canterbury, it is clear that more is at stake than the play the Chillingham Drama Group is shortly to perform. Ostensibly, it is to be a re-enactment of a similar pilgrimage and production over 40 years earlier. But that event ended in the murder of Hugh Wayncroft, the gentle owner of the local manor house, a slaying that has never been solved.... Determined to discover the killer, Marsh and Daughter set out on a dangerous journey: one that could provide the solution not only to Chillingham's problems, but to their own.