It is 1940. The world’s greatest mystery writer witnesses a murder by hemlock poisoning. She accuses Katie Walker of the crime. Katie’s detective partner, Charlie Singer, seeks the real murderer. But he can’t prevent the death of the one person who can free Katie. The novel is filled with deceptive twists and the dark and deadly secrets of family life. The case’s shocking revelations change Charlie as he discovers truths within himself about love and justice.