Behind the 1976 Chowchilla mass kidnapping
We're getting a rare look at evidence from one of the largest mass kidnappings in U.S. history, more than 40 years later. Three masked gunmen seized a bus carrying 26 children and their driver in 1976. The kidnappers drove them 100 miles from Chowchilla, California, to a rock quarry and buried the children and the driver alive. David Begnaud previews his "48 Hours" report, which airs Saturday, Oct. 12, 10/9c.