Sisters. Traitors. Spies. When a British RAF Whitley plane comes under fire over the French coast and is forced to drop their cargo, a spy messenger pigeon finds its way into unlikely hands-The occupation has taken much from the Cotillard sisters, and as the Germans increase their forces in the seaside town of Boulogne-sur-Mer, Gabriella, Martine and Simone can-t escape the feeling that the walls are closing in.Yet, just as they should be trying to stay under the radar, Martine-s discovery of a British messenger pigeon leads them down a new and dangerous path. Gaby would do anything to protect her sisters but when the pianist is forced to teach the step-daughter of a German Commandant, and the town accuses the Cotillards of becoming -Bad French- and in allegiance with the enemy, she realizes they have to take the opportunity to fight back that has been handed to them.Now, as the sisters- secrets wing their way to an unknown contact in London, Gaby, Martine and Simone have to wonder - h