Estranged hubby dressed as Santa slaughters his entire family in holiday bloodbath

Grapevine, Texas, police receive a 911 call about a shooting. Six relatives are gunned down on Christmas Day. Who made the 911 call? What drove a man to dress as Santa and kill an entire family?

Joining Nancy Grace today:

Allison Jones - Best friends with Nona (victim) Todd Dearing - Captain of Criminal Investigation Grapevine Police Department Mashy Modjdehi - Friend of Fatemah Rahmati Ashley Wilcott - Judge and trial attorney Dr. Bethany Marshall - Psychoanalyst, Beverly Hills, www.drbethanymarshall.com Joe Scott Morgan - Professor of Forensics Jacksonville State University, Author, "Blood Beneath My Feet" featured on "Poisonous Liaisons" on True Crime Network Levi Page - CrimeOnline reporter