Correspondent Peter Van Sant and 48 HOURS investigate the death of a young Mississippi man and new information uncovered by 48 HOURS that gives his family hope in their search for justice.

A young mother was found murdered in an Alabama river in 1990. Nearly 30 years later, the man long suspected as her killer was arrested. But just before trial, a confession turned the case upside down. Now, in her first television interview, the woman who changed the case speaks to 48 HOURS.