Welcome the Walkers back into your home with the emotional fourth season of the warm and witty drama that explores the triumphs and tragedies of the American family. Featuring one of the most celebrated casts on television, including Sally Field, Calista Flockhart, Rob Lowe, Rachel Griffiths and Patricia Wettig. No matter how much life changes, family stays the same. As new challenges arise for the Walkers, they learn to rely on one another more than ever before. Kitty's personal revelation devastates the entire family, Nora begins a relationship with a younger man and the Walkers experience a wedding no one will ever forget. Relive all the drama and every touching moment of Season Four, complete with never-before-seen bonus features available only on DVD!