| Behind Bars: World's Toughest... | ...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) | Sat, Mar 16, 12:30 am | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...Prisons. Taichung Men's Prison is the biggest and toughest in Taiwan, housing some of the most dangerous criminals and operating a system of "progressive correctional treatment". (S4 Ep3) | Fri, Mar 8, 10:00 pm | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...Prisons. Taichung Men's Prison is the toughest in Taiwan, housing some of the country's most dangerous criminals and operating a system of "progressive correctional treatment". (S4 Ep3) | Tue, Mar 5, 10:00 pm | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...Prisons. The most heavily-guarded prison in Croatia. The country's 500 most dangerous criminals serve their sentences here - and every day the struggle for survival begins anew. (S4 Ep2)[S] | Fri, Mar 1, 10:00 pm | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...Prisons. New Bilibid Prison is one of the most notorious prisons on the Philippines. Designed to hold 1500 offenders, there are currently more than 8000 incarcerated there. (S4 Ep1) | Fri, Feb 23, 10:00 pm | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...Prisons. In the Philippines CIW, correction officers risk their lives to deal with more than 3000 prisoners, especially during the day, when over 1000 prisoners are not locked up. (S3 Ep6) | Fri, Feb 16, 10:00 pm | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...Prisons. Zenica prison - an 1886 fortress - is the toughest prison in Bosnia and Herzegovina. Discipline and fitness are essentials that the prison administration regularly reviews. (S3 Ep5) | Fri, Feb 9, 10:00 pm | 5ACTION | 60 mins |
| Behind Bars: World's Toughest... | ...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) | Fri, Jan 26, 11:00 pm | 5ACTION | 60 mins |