Donna Lazzini embraces her son, Timothy Lazzini, a resident of the Sonoma Developmental Center who died in 2005.
About 1,800 Californians with cerebral palsy, severe autism and other developmental disabilities live in one of five "Developmental Centers" run by the state. The centers maintain their own police force. But an investigation with our media partner California Watch has uncovered something troubling. With official reports of abuse on the rise, hundreds of cases remain unsolved -- even when patients die under suspicious circumstances. Reporter: Michael Montgomery