Mona Must Die (1994)

Disillusioned, Eddie is a long-suffering husband who finds passion and happiness with his neighbor, Rachel, a struggling estate agent. Only one thing stands in their way - Mona, Eddie's tyrannical wife who helped Eddie when he was still a recent immigrant, then trapped him in a loveless marriage. As the relationship deepens, the two lovers devise a plan where Rachel is brought into the house as Mona's live-in attendant for Mona must die.