Far Side of the Sea 

In spring of 1918, Lieutenant Colin Mabry, a British soldier working with MI8 after suffering injuries at the front, receives an unexpected message by carrier pigeon: it is an urgent summons from Jewel Reyer, the woman he once loved and who saved his life—a woman he believed to be dead. Leaving Britain’s shores to return into war-torn France, he hopes his reunion with her will ease his guilt and this mission restore the courage he lost on the battlefield.

Colin is stunned when he arrives in Paris to discover the message came not from Jewel, but from a stranger who claims to be her half sister, Johanna. Johanna works at a dovecote for French Army Intelligence; having found Jewel's diary, she believes her sister is alive and in the custody of a German agent. With spies everywhere, Colin is at first skeptical of Johanna, but as they travel across France and Spain, a tentative trust begins to grow between them.

When their pursuit leads them straight into the midst of a treacherous plot, however, that trust is at stake, as danger and deception turn their search for answers into a battle for their lives.