Episode 1
Raphael Rowe spends a week behind bars at Tacumbu prison in Paraguay, where inmates scrounge in the trash in order to pay their own way.
Episode 2
Schwalmstadt, a 12th-century fortress surrounded by a moat, houses some of Germany's worst offenders, many of whom attend intense therapy sessions.
Episode 3
The tropical island of Mauritius is home to Melrose maximum security prison, where even the smallest infraction is met with extreme punishment.
Episode 4
An unnerved Rowe contends with aggressive cellmates at Maseru prison, where a high number of inmates are behind bars for rape.
