100 Feet (2008)

Marnie Watson has been sentenced to prison for killing her own husband, a police officer, in self-defense. But Marnie is suddenly released from prison early, as she is allowed to spend the rest of her sentence in her own home with an electronic leg bracelet. While a colleague of her deceased husband waits in a car outside her house for her to reoffend, Marnie discovers that her deceased husband himself is still haunting the house. And he wants nothing more than revenge.