When grieving historian Lillian Everhart retreats to a snowbound cottage on the edge of the moors, she expects silence - not the echo of footsteps from a winter long past. Drawn to a forgotten journal and a portrait hidden beneath the floorboards, Lillian begins to unravel the story of Eliza Harland, a woman who vanished in the winter of 1845... and whose life seems eerily entwined with her own.