Together Serena and George ruthlessly kill or vanquish all who fall out of their favor. But when Serena learns that she will never bear a child, she sets out on her own to kill the son George had without her. Mother and child begin a struggle for their lives, and when Serena suspects George is protecting his illegitimate family, the Pembertons' intense, passionate marriage starts to unravel as the story moves toward its shocking finale.