Red Nights (Les Nuits rouges du Bourreau de Jade) is a 2010 French-Hong Kong giallo slasher film directed by Julien Carbon and Laurent Courtiaud.
The filmmakers call it a Hong Kong giallo with mystery, (sadistic) murders, fetishism and women.
[2][3] There is a legend of an executioner who created a poison which brought death through absolute pleasure.
This legend repeats nowadays when a French woman flees to Hong Kong after killing her lover and stealing from him an old artifact containing this poison.
She meets a mobster from Taiwan and an epicurean and sadistic woman killer, who all want to get the precious poison.