When Katherine Phillips, a well-known community leader with a failing marriage, accidently strikes a pedestrian who steps in front of her vehicle on a snowy day, she has no idea how her life will change. The unconscious victim, an unidentified homeless person, is taken to a hospital. It isn't until police release a photo that Katherine realizes the person is someone from her past.

Growing up in a small town, Katherine and Myra Martin met in elementary school and were best friends until high school graduation. They lost contact as their lives moved on to college and careers. How far will...