When Louisa Deasey receives a message from a Frenchwoman called Coralie, who has found a cache of letters in an attic, written about Louisa’s father, neither woman can imagine the events it will set in motion.

When Louisa Deasey receives a message from a Frenchwoman called Coralie, who has found a cache of letters in an attic, written about Louisa’s father, neither woman can imagine the events it will set in motion.