This is a thriller that builds slowly. It works from a rather nasty premise and doesn't flinch. The viewer is presented with the difficult task of watching a serial killer slide deeper and deeper into a world of horror and despair. The situations are gut wrenching and intense. Blood and gore are minimal.
Possibly taking its name from the American film "Silence Of The Lambs", this film from Hong Kong goes places that the American film didn't dare.