
Behind Bars: The World's Toughest Prisons — Season 4
About this season
These are some of the toughest prisons in the world. Prisons so tough, even gang bosses and killers learn the meaning of fear. Across four continents, six different prisons, the series takes us beyond the gates, walls, barred windows and cells into an unknown world, a world we know exists, but a world nobody wants to think about.
Episodes (6)

1. New Bilibid Prison
Aired 8 March 2024
New Bilibid Prison is one of the most notorious prisons in the Philippines. Originally designed to hold 1500 offenders, there are currently more than 8000 incarcerated there.

2. Lepoglava, Croatia
Aired 8 March 2024
The toughest and 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.

3. Taichung Men’s Prison, Taiwan
Aired 10 March 2024
Taichung Men’s Prison is the biggest and toughest in Taiwan, housing some of the country’s most dangerous criminals and operating a system of ‘progressive correctional treatment’.

4. Episode 4
Aired 15 March 2024

5. Episode 5
Aired 17 March 2024

6. Episode 6
Aired 22 March 2024