Gemini said
Red Nights (2010)
Plot: In this stylized "Asian-Giallo" thriller, Catherine is a French woman who flees to Hong Kong after murdering her lover and stealing a rare, ancient Chinese artifact. The object is a jade seal rumored to contain a legendary elixir created by a master executioner for the first Emperor. This poison is said to paralyze its victims while heightening their nervous sensitivity tenfold—turning every sensation into a blur of extreme erotic pleasure and agonizing pain. Catherine’s attempt to sell the artifact draws her into a lethal cat-and-mouse game with Carrie Chan, a sadistic and fetishistic criminal mastermind who desires the poison for her own twisted experiments. As the two women clash, the neon-lit streets of Hong Kong become the backdrop for a series of elaborate, ritualistic murders where the boundary between ecstasy and death disappears.