A serial rapist is loose in the Hong Kong suburb of Tuen Mun. Based on the true story of Lam Kwok-wai, who raped and murdered women in the early 90s.A serial rapist is loose in the Hong Kong suburb of Tuen Mun. Based on the true story of Lam Kwok-wai, who raped and murdered women in the early 90s.A serial rapist is loose in the Hong Kong suburb of Tuen Mun. Based on the true story of Lam Kwok-wai, who raped and murdered women in the early 90s.