...Prisons. The high-security facility on the outskirts of Bucharest houses some of the most dangerous criminals, including murderers and human traffickers. Escape is near impossible. (Ep4)
...Toughest Prisons. The most heavily-guarded prison in Croatia, where 500 criminals serve their sentences here - and every day the struggle for survival begins anew. (S4 Ep2)[S]
...Toughest Prisons. New Bilibid Prison is one of the most notorious on the Philippines. Designed to hold 1500 offenders, there are currently more than 8000 incarcerated there. (S4 Ep1)
...Prisons. Urso-Branco - the White Bear - is one of the most notorious prisons in Brazil. In the past 20 years more than 100 people have died in riots. (S3 Ep3)
...Toughest Prisons. A high-security prison with an area the size of ten football pitches. Surrounded by six-metre-high walls, and the sea, the facility houses up to 800 criminals. (S3 Ep2)
...Toughest Prisons. Colony 8 in Ukraine is one of the toughest and most notorious prisons in the country. It is said that no one has ever escaped from here. (S3 Ep1)