Russian emigree Eva Delectorskaya was 28 years old, in Paris 1939, when her beloved younger brother Kolla was murdered.  At his funeral, Eva noticed a mysterious stranger, Lucas Romer, who was connected to her brother's tragic demise.  Knowing that Eva was fluent in several languages, Romer recruited Eva to replace her brother as a spy in his underground propaganda network called the British Security Coordination.  Eva underwent intensive training, and after a successful covert operation in Belgium she was sent to New York City.  Her operation there was intended to manipulate the American press to swing sentiment in the U.S. in favor of going to war.  The operation was compromised and nearly cost Eva her life. So she was forced to disappear and change her identity.

Thirty years later, Eva has transformed herself into Sally Gilmartin, a 60 year old widow, mother and grandmother living in the Cotswolds.  But in spite of her new life, Eva has never stopped looking over her shoulder. Convinced that her life is still in danger, she tells her daughter Ruth her story and in turn recruits Ruth to help her find Romer, the man whom she had loved years ago, the man who betrayed her.

Restless, an intriguing historical thriller, is somewhat based on an actual branch of British intelligence that was formed to coax America into WWII.  Eva's fascinating story is a great illustration of how even the most minor characters played significant and pivotal roles in the events leading up to WWII.