Final Vendetta (1996)

This suspense film is the tale of a yuppie couple (Matsuda, Cohen) unable to conceive and desperate for a child. They enlist the services of Jennifer (Wilson) to act as surrogate mother. Unbeknownst to the couple, Jennifer has an ulterior motive to this union - to exact revenge for a childhood tragedy which has had a deep, malevolent effect on her. Jennifer moves in with the couple, and during her pregnancy, will allow nothing (or no one) to stop her in her quest for a "final vendetta."