Lockdown: Total Control

Go inside one of the newest high-tech maximum-security prisons in the United States Alexander Correctional Institution in Taylorsville, North Carolina. In this prison, which has earned the nickname hell from inmates, see how officers use sophisticated technology and unconventional methods to keep a choke hold on it's violent prisoners. National Geographic uncovers the secrets behind this penitentiary and demonstrates how it has been specifically built to prevent any kind of inmate escape attempts.