Dallas - Season 2 - Casting News - Ted Shackelford and Joan Van Ark to Guest

Thanks to Josh for the heads up.

Ted Shackelford and Joan Van Ark are bringing their long-suffering Knots Landing characters, Gary and Valene Ewing, back to Dallas for a big family reunion set to air in Spring 2013.

Dallas, which returns to TNT for Season 2 in late January, had attempted to bring back the Knots pair last season for cameo appearances, but Shackelford, who also recurs on CBS's The Young and the Restless, wisely held out for a meatier storyline. He got his wish, as I hear he and Van Ark will be on for a three-episode arc. No word if their all-grown-up twins, Bobby and Betsy, will be joining them.

Source: TV Guide