Equally effective as weary heroes and psychotic villains, Robert Mitchum had a screen presence that few actors could replicate. Best known for his turns in film noir and thrillers, Mitchum gave Hollywood some of its most iconic baddies and toughest antiheroes. We'll hear him as a man plotting a murder in "Death at Live Oak" (originally aired on CBS on May 15, 1947) and as Washington Irving in a biographical drama from The Cavalcade of America (originally aired on NBC on May 3, 1948).