Student archaeologist Millie Sanderson is hoping to uncover an ancient chariot burial site in Wensleydale but work is interrupted when her housemate, Vrishti Bhatt, disappears. Inspector Ernie Brown is not concerned and dismisses a hit-and-run accident that involves her lecturer as an 'unfortunate coincidence'. But even Inspector Brown cannot ignore the next incident in the Archaeology Department. Baffled, he turns to DS Mitch Turner for support, ignoring Nina, a new young constable, who is working systematically through the evidence. Meanwhile Millie and her friends are pursuing their own investigations