On the top floor of a special hospital, locked away from their families and friends, a group of men and women are subjected to a regime of physical assaults, systematic brutality, and torture by the very people supposed to be caring for them.
The victims are some of the most vulnerable in society - the learning disabled, the autistic, and the suicidal. In a Panorama Special, Paul Kenyon exposes the truth about a gang of carers out of control, and how the care system ignored all the warning signs.
Joe Casey spent five weeks filming undercover in a private care hospital on the outskirts of Bristol after getting a job as a support worker. He was shocked by what he witnessed.
Police in Bristol have arrested four people after secret filming by BBC Panorama found a pattern of serious abuse at a residential hospital.
Watch the full documentary now (playlist)