Eve is a spy during World War I who goes by the alias Marguerite Le François. She infiltrates enemy territory and carries scars from a violent past encounter. She helps Charlie in her search for Rose.

Finn is a handsome Scotsman with a troubled past who accompanies Charlie and Eve on their journey. He desires to open his own auto repair shop and eventually falls in love with Charlie.

René is the owner of two restaurants who collaborates with the enemy during the war. He is charming but ruthless, having inflicted harm on Eve in the past.

Lili is the courageous spymaster of Eve’s ring who excels in smuggling messages during the war. She trains and befriends Eve, demonstrating great bravery.

Violette is a former nurse and Lili’s second-in-command, initially skeptical of Eve’s abilities as a spy but plays a pivotal role in saving Eve’s life.

Cameron is the officer who recruits Eve for spy work, harboring feelings for her while dealing with personal and professional guilt.