After the death of her husband William, Lynda James goes in search of her lost daughters. Ashlynn, an historian and archaeologist, disappeared while on a dig at Hadrian's Wall. Jacklyn, a free spirited journalist, went to the wall to search for her missing sister. Instead of finding Ashlynn, Jacklyn also disappears. Now, Lynda has come to the wall in search of her missing daughters.With the help of a mysterious taxi driver named John Graham, Lynda searches the length and breadth of Hadrian's Wall and the countryside beyond. Will Lynda find her missing girls, some kind of a sign as to where they went, or will she forever bear the pain of not knowing what happened to them?