In the London slums, a child is born, a promise made. And Hettie isn't going to let a silly thing like death keep her from her word.

In Victorian London, life is short and cruel, so when a chain of tragedies leave her alone with a new baby, Hettie vows to protect her daughter, no matter what.

In Upper Canada, while war wages to the south, Mary packs her bags and runs. Her only thought; returning to her beloved Mama. But back home, Mama has vanished; another woman taken her place, and Mary isn't welcome.

In modern day Canada, Jane returns to her childhood home, but she hadn't expected the eerie lullaby that echoes in the halls, or her nights swallowed by dreams of a man, and a gun, and a name she can't escape: Mary.