When a woman disappears, her children are certain she's been murdered. But without a body, they know it will be hard to get justice. "48 Hours" correspondent Erin Moriarty reports.

When 15-year-old Danni Houchins is found dead in a swamp, her family says they were led to believe she drowned. 24 years later, Danni's sister learns the terrible truth. "48 Hours" correspondent Peter Van Sant reports.