When Annie marries widower Edward Stonehouse and arrives at his estate on the Yorkshire moors, she thinks she's put darkness behind her.

She is mistaken. Edward's sister, Iris, still lives in the family home. A taxidermist and medium, she urges Annie to look for black feathers - claiming that they mark the spot where a spirt has visited.

Initially, Annie dismisses her warnings. But, before long, she begins to feel haunted.

What happened to Edward's first wife? Why is Iris so disturbed?

And should Annie really be watching for signs from the dead? Or is she the one being watched..?