The Mystery of Mary — Grace Livingston Hill

When a beautiful young woman approaches wealthy Tryon Dunham at a train station and tells him she is in danger, he agrees to see her to safety. Then, before he can learn any more about her other than that her name is Mary and she is running to Chicago, she is gone.

But Tryon cannot forget Mary's beautiful face and spirit. Soon he finds himself trying desperately to solve the mystery that surrounds her . . . a mystery that could overwhelm them both. And he determines to discover the true identity of the young woman he longs to protect--and love.