Documentary of the S-21 genocide prison in Phnom Penh with interviews of prisoners and guards. On the search for reasons why this could have happened.
| Actor | Role |
|---|---|
| CChum MeyHimself (Survivor) | Himself (Survivor) |
| KKhieu 'Poev' ChesHimself (Guard) | Himself (Guard) |
| YYeay CheuHerself - Him Houy's Mother | Herself - Him Houy's Mother |
| NNhiem EinHimself - Photographer | Himself - Photographer |
| HHouy HimHimself - Security deputy | Himself - Security deputy |
| TTa HimHimself - Him Houy's Father | Himself - Him Houy's Father |
| NNhieb HoHimself - Guard | Himself - Guard |
| PPrakk KahnHimself - the Torturer | Himself - the Torturer |
| PPeng KryHimself - Driver | Himself - Driver |
| SSom MethHimself - Guard | Himself - Guard |
| VVann NathHimself - Survivor | Himself - Survivor |
| TTop PheapHimself - Interrogator & Typist | Himself - Interrogator & Typist |
| TTcheam SeurHimself - Guard | Himself - Guard |
| MMak ThimHimself - S21 Doctor | Himself - S21 Doctor |
| SSours ThiHimself - Head of Registers | Himself - Head of Registers |