While Frank is boarding at Mrs. Trevor's home, she decides to play matchmaker between him and another boarder, Diana Fothering. While Frank has not yet met the young lady, he is assured of her beauty by means of a painting in his room that she strongly resembles. Mysteriously, the painting has been a feature of Frank's nightmares while he has been staying in the room. He and Mrs. Trevor begin unraveling a bit of mystery concerning Diana and the painting, while his nightmares seem to be coming to fruition.