CBS News 48 Hours introduces you to Sterling Barber, a young man accused of murder. Barber, who was 17 when the incident occurred, admits that he killed the man, Douglas Wyatt, but claims he stabbed him in self-defense after Wyatt tried to rape him. Unconvinced, a jury convicted him of murder and the judge sentenced him to life in jail, plus 40 years. Barber appealed his case. What will happen? And who is in the right? 48 Hours Correspondent Richard Schlesinger reports from Georgia.