Miles O'Brien interviews Andy Williams and his father, Jeffrey. Andy was convicted of the 2001 shooting at Santana High School. In the shooting two students were killed and thirteen others were wounded. Andy is serving life in prison without the possibility of parole for 50 years.

Learn how much science can tell us about a brain at risk for violence. NOVA "Mind of a Rampage Killer" premieres Wednesday, February 20, 2013, 9p.m. ET, as part of "After Newtown" special programming.

Explore more at http://www.pbs.org/wgbh/nova/rampage

http://www.pbs.org/wnet/after-newtown/