The Evil Touch (1973)

Season 1: Episode 12

Constance knows that her much younger husband, Evan, is having an affair with her nurse, and that he's hastily stashed her in the closet. That why she demands that he immediately brick up it up. Not wanting to lose out on his rich wife's money, he does as she says. Constance thinks the nasty little problem is behind them until the supposedly dead nurse starts appearing around the house.