Rookie policeman Will Ren and his partner, the veteran cop Cham Lau, are pursuing an obsessive and especially brutal murderer of women.Cheung Pou-Soi does an excellent directing job here, turning the vision of writers Au Kin-Yee and Shum Kwan-Sin into a black and white film noir where characters’ motives are no cleaner than the rubbish dumps in which it’s set. Another brilliant turn by Lam Ka-Tung as the jaded detective, and Mason Lee (son of legendary director Ang Lee) plays a good rookie-in-charge-with-issues. Even when you think the females are there to be the weak ones, their tenacity may well surprise you. I really enjoyed rooting for certain characters all the way through but especially at the end. Warning – this should be an 18 cert in the UK for rape and injury detail.