Three girls and their mother were found dead in their mobile home in Parker County, Texas, this morning in what is believed to be a murder-suicide.  An 8-month-old girl was hanging but alive.  

Expert:

  Dr. Richard Gelles

  Dean, School of Social Policy and Practice, University of Pennsylvania

Credentials:

* Internationally known expert in family violence and child welfare

* Author of "Controversies on Domestic Violence " and "The Violent Home"

* Currently co-authoring "Intimate Violence and Abuse in Families"