Grace Livingston Hill 
Mystery of Mary 

When a gentleman crosses paths with a mysterious beauty, he soon finds he cannot forget her in this early-twentieth-century romantic mystery. Tryon Dunham has just gotten off his evening train when a beautiful young woman approaches him in a panic. She is in grave danger and desperately needs his help. To keep her safe, Tryon spends an evening in her company before she disappears on a train to Chicago. Though the mysterious woman is out of his life as suddenly as she entered it, Tryon is left with the unforgettable memory of her beauty and spirit, her uncanny musical talent, and her first name—Mary. Throwing caution to the wind, he heads to Chicago in hopes of finding her again, protecting her from harm . . . and finally learning the truth.