To her husband of two years, Mrs Latter is beautiful, charming, and generous. Others know her to be cold, manipulative, and used to getting her own way. When she dies under suspicious circumstances, her grief stricken husband makes a desperate call to Miss Silver.

Lois has always dreamed of being a Latter. The Latter brothers are both so attractive—nearly as handsome as their stately manor, Latter End. After she spoils her relationship with one brother, she succeeds with the other, winning his heart with her good looks and the sizeable fortune she had won in her first marriage. But even after they’ve wed, she never quite fits in with the family. Still, she hardly expects them to kill her. But that’s just what the psychic Memnon warns her of: poison. She laughs it off and so does everyone else, but then, like clockwork, she is dead. The police call it murder. The weapon? Poison, of course. It is a tantalizing case, complicated by the bitterness that infests Latter End, and only the brilliant Maud Silver, once a governess, now a detective, is up to the challenge.