Corradino Correctional Facility is Malta's only prison. It is home to 673 men and 59 women serving time or awaiting trial. And yet very little is known about it, or about prison life in Malta.

Mark Laurence Zammit was granted an exclusive, unprecedented four-hour filmed tour of the facility by prisons director Chris Siegersma, one month after a damning report by the Ombudsman which saw Corradino described as a "factory of evil" by one inmate.

This is what he saw.

Produced by Mark Lawrence Zammit. Filmed by the Correctional Services Agency. Edited by Karl Andrew Micallef.