Josh Bearman continues his story by looking at how things got so bad for his mother and David in the first place.

When Sarah was 10 years old, she got a heart transplant. Soon after, her mother decided to find out more about the person who saved her daughter's life.

Jason Minter lived through the worst trauma you could imagine: He was at a friend's house, a gun pressed to his head, while his mother and another woman were raped and shot to death in the next room by robbers. He was six.