Power of Love

Original title: 情不自禁之想入非非

Directed by Simon Leung Chi-Wa

A young girl gets a job as a maid to a lecherous old billionaire. During her time there he dies, and decides to leave his money to the object of his desire, rather than his own son. His son's wife however is less than happy about this and sets in motion a chain of sexual dalliances and murder.