If you can't trust your sister, then who can you trust?
Kate Rafter has spent her life running from her past. But when her mother dies, she's forced to return to Herne Bay - a place her sister Sally never left.
But something isn't right in the old family home. On her first night Kate is woken by terrifying screams. And then she sees a shadowy figure in the garden...
Who is crying for help?
What does it have to do with Kate's past?
And why does no one - not even her sister - believe her?