Bernadette Windsor, a successful computer programmer, is the center of a big secret that threatens her life, and she doesn't even know it. When a letter warns that her sister's death was not from illness but murder, she has to find out quickly whom she can trust. But her two surviving sisters are guarding a terrible secret with their lives, and as time rushes by and secret revelations mount, Bernadette discovers that danger can come from friends and family as well as foes.
