asking a film's name

Hi all,

I just saw a film several years ago, but I can't remember the film name.
The basic story is that a man and a lethal woman kidnapped a houselady, then the houselady's ex-husband come to find the houselady,..., the lethal woman make love with the ex-husband in a swimming pool, then she kill the ex-husband by a kinife in the swimming pool.......
At the end, the houselady stab blind one eye of the lethal woman.

Does anyone know the film name, please share it.

Thanks