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Cambodian director Rithy Panh's "work of remembrance" revisits the S21 detention centre in Phnom Penh. Here, under Pol Pot's rule, thousands were tortured by Khmer Rouge followers.

Reuniting two of S21's surviving inmates with the guards responsible for their abuse, documentary-maker Panh focuses on the details of the genocide. It's tough viewing and a thoughtful attempt to come to terms with a country's traumatic past.

The Total Film team are made up of the finest minds in all of film journalism. They are: Editor Jane Crowther, Deputy Editor Matt Maytum, Reviews Ed Matthew Leyland, News Editor Jordan Farley, and Online Editor Emily Murray. Expect exclusive news, reviews, features, and more from the team behind the smarter movie magazine.