Grace Livingston Hill 
Seventh Hour 

Dana Barron was raised by a godly father and had no contact with his mother who took his sister and abandoned the family over twenty years ago. But on his deathbed, Dana’s father asks him to be reunited with his mother and sister. Reluctantly, Dana enters New York society, dragging his friend Bruce along for moral support. Faced with a world foreign to his own and full of greed and danger, Dana pledges to show his sister a better way and take her to a place of safety.