Adeliza Golding is a deaf blind girl, born in late Victorian England on her father's hop farm. Unable to interact with her loving family, she exists in a world of darkness and confusion; her only communication is with the ghosts she speaks to in her head, who she has christened the Visitors. One day she runs out into the fields and a young hop-picker, Lottie, grabs her hand and starts drawing shapes in it. Finally Liza can communicate. Her friendship with her teacher and with Lottie's beloved brother Caleb leads her from the hop gardens and oyster beds of Kent to the dusty veldt of South Africa and the Boer War, and ultimately to the truth about the Visitors.