At Night with No Curtains (2004)

This independent horror film follows five 1958 teenagers who go off to explore a local legend surrounding an abandoned plantation home. The legend tells of a Civil War widow named Elizabeth Hatley, who upon hearing the news of her husband's death, ordered her maidservant to fatally wound each of her children and lock them in the closet. The legend asserts that anyone who enters the closet and says, "The maid is not dead but sleepeth," three times will awaken Elizabeth Hatley's spirit.