Michael Montgomery investigates reports of rising abuse at California's "Developmental Centers." Some 1,800 of California’s most vulnerable citizens live in these special facilities run by the state. They are men and women with cerebral palsy, severe autism and other developmental disabilities.

The state’s five “Developmental Centers” have their own unique internal police force to solve cases of patient abuse. But an investigation with California Watch has found troubling flaws in their police work.

With official reports of abuse on the rise, hundreds of cases remain unsolved, even when patients die under suspicious circumstances.