When Susan's mother's secret life as a spy for MI6 during the cold war, spills over into Susan's life, she is unprepared for the devastating effect this has on their lives for many years to come.
To begin with, her mother tells her that she suspects that her life is in danger. then she says she has seen an old enemy from the cold war lurking around in the village. she also says she thinks other men might be involved as well, due to the number of enemies she made during that time.
Susan questions why they'd come after her mother so many years later, but her mother assures her that they are men who have huge grudges against her, for what she did during the cold war.
her mother then places five encrypted emails on her laptop, and tells Susan that if she receives a certain sms from her, she must send off the emails immediately.
But as Susan doubts if anything will come of this,she is surprised one morning to receive an sms giving her the 'send' instruction.
after she has sent off the emails, she gets into her car and drives to her mothers house, but on the way there, she finds her mother sitting at a bus stop down the road from her house. when she asks her what she is doing there, she realizes her mother is in a terrible state and unable to talk about what has happened to her.
Susan then drives up to the house and finds that the police are already there, while at the house, there are signs that a terrible battle took place.
The police tell Susan they have discovered three bodies and that there is plenty of blood all over the place. they also say that MI6 will be taking over the case and that they will possibly have some answers for her. the police then try to persuade Susan to get her mother to talk to them, as they are convinced that she must have seen what happened, but they soon realize that her mother is not in a fit state of mind to give them a statement.
When MI6 arrives, they tell Susan her mother was definitely involved, due to the manner in which she cleaned up after herself and by the measures she took to ensure that the local police did not suspect her involvement.
They then go on to explain what her mother once did for her country and Susan is amazed that her kind, gentle mother, could ever have been such an incredibly brave spy.
MI6 later takes them to a safe house, but after a time, Susan and her mother decide that they will be better off if they leave England and hide out elsewhere. they decide to make their way to a small Greek island, where they become absorbed into the local community.
Susan later marries a local man called Jorge and they have two children that her mother dotes on. for the most part they are happy and they live pleasant carefree lives, but once in a while,Susan begins to feel edgy and starts to imagine seeing suspicious looking men lurking around in the village.
At these times, she remains at home in hiding, until the feeling has passed. then one day when she has a conversation with her mother about her suspicions, she realizes that her mother still feels afraid that someone will come after her, even now..
So on days when things do not seem quite right with their world, Susan stations herself on a rock far out in the ocean, where she fervently prays, as she watches the waves while they wash onto the pristine white shore. then only when all her fears for their safety have been washed away, does she return home to her family.