Each driven mad — one by child-killing diphtheria, another by the constant rape of a cruel husband, all by the acrid isolation — they're the seldom seen victims of the male pioneers usually glorified in Westerns, collateral damage to an ill-conceived Manifest Destiny. The carpenter who crafts the jail-like cell, abundantly fitted with chains to hold the women, tells her: "People like to talk about death and taxes, but when it comes to crazy, they stay hushed up." Into the Western's traditional sweeping grandeur creep the discordant notes of Marco Beltrami's score. In "The Homesman," Mary Bee and Briggs travel across the plains, a pious spinster and an ornery rascal towing madness across the dangerous open range. Jones, a devoted fan of Cormac McCarthy (whom he adapted for the HBO film "The Sunset Limited"), takes after the novelist's pursuit of bleak, merciless poetry down North American pathways. The Homesman," a Roadside Attractions release, is rated R by the Motion Picture Association of America for "for violence, sexual content, some disturbing behavior and nudity.