Two men were seen in a Texas yogurt shop just before four teenage girls were killed there in 1991, and some wonder whether identifying them will lead to answers in the unsolved case.
In 1977, Shayna Glassman's father lived in apartment 6E at 35 Pine Street in Yonkers, N.Y. His direct upstairs neighbor was a young postal worker named David Berkowitz.
The murders of four teenage girls have haunted Austin, Texas, for more than 30 years. Could new information lead to a killer? "48 Hours" correspondent Erin Moriarty reports.
