In 1890s Missouri, secrets are a matter of survival.

Clairvoyant Sarah Richardson screams as her older sister Katherine is forced into a straitjacket and thrust into a carriage bound for the St. Louis City Lunatic Asylum. She is devastated to learn Katherine has been blamed for her inadvertent role in an abused woman's murder. Now, too frightened to speak up, she hides the truth that it should have been her in that carriage.

Sarah's mounting guilt becomes too much, and she heads to St. Louis, determined to regain her sister's confidence and prove herself worthy of forgiveness.

While working to heal their relationship, Sarah meets a timid housewife who tries to hide her bruises. When troubling psychic visions of the woman begin to affect her, she sees an opportunity to atone for her past mistakes. Desperate to do whatever it takes to make things right, Sarah embarks on a perilous journey that may cost her everything—including her own life.