Charlotte Miller, a fantasy author from New York City, attends an exclusive writer's retreat in Scotland. While she plans to spend her time writing the last novel of her series, she finds herself dealing with a traumatic secret that has changed her life. Terrified of being found out, she becomes drawn to one of the other authors as the retreat, Samuel Callister, a mysterious Scottish poet who has his own deadly secrets and lies. With their dark pasts, they find themselves intertwining their future, struggling to heal and find a place to feel safe.