Erika Murray, the mother of four children found living in horrible squalor in August, remains in jail on charges of child neglect. She may face additional charges and is reportedly on suicide watch. As for the house on St Paul Street, it now sits largely empty after cleaning crews hauled away more than two dumpsters worth of hazardous material and filth.

The question everyone is now asking is what would lead a mother to keep children in such unspeakable conditions.

Jack Levin is a professor of criminology at Northeastern University and the author of “The Will To Kill.”

Robert Mendoza is a forensic psychologist and assistant professor at Tufts Medical School.