Season nine stars John Forsythe as millionaire oil magnate Blake Carrington; Linda Evans as his wife Krystle; Gordon Thomson as Blake and Alexis's eldest son Adam; Heather Locklear as Krystle's niece Sammy Jo; Michael Nader as Alexis's husband Dex Dexter; Emma Samms as Blake and Alexis' daughter Fallon; John James as Fallon's ex-husband Jeff Colby; Leann Hunley as Adam's wife Dana; Stephanie Beacham as Alexis's cousin Sable Colby; Tracy Scoggins as Sable's daughter Monica; and Joan Collins as Alexis Colby, Blake's ex-wife and the mother of Adam, Fallon, Steven, and Amanda.