Diane Downs is convicted of shooting her three children in her car, driving them to the hospital, and claiming it was a carjacking gone horribly wrong. She, herself, had been shot in the arm, but investigators were suspicious of her story.

Nancy's expert panel weighs in:

Darryl Cohen, Atlanta criminal lawyer, former prosecutor

Dr. Daniel Bober, forensic psychiatrist

Vincent Hill, private investigator, author of "Playbook to a Murder"

 John Lemley, Crime Stories investigative reporter