Inside the world's toughest prison | Rare access

For years, El Salvador has been plagued by rampant street violence, drug cartels and murders, earning its reputation as one of the most dangerous places on earth.

Once notorious for the highest daily murder rate worldwide, it now holds the record for the highest incarceration rate.

In this remarkable documentary acclaimed journalist Liam Bartlett will take you inside the epicenter of El Salvador’s brutal and unforgiving prison system.