Season seven of the primetime soap continues right where the previous one left off: Alexis' life is spared as Krystle is able to restrain Blake's lethal temper, Amanda is rescued by Blake's chauffeur, Michael Culhane, and Claudia is claimed victim by the ravaging flames. After Blake recovers his wealth, he loses his memory following an oil rig explosion. While everyone thinks he is dead, Alexis makes him believe they are still married. Sammy Jo's marriage to Clay meanwhile crumbles and she sleeps with Steven. Krystina receives a heart transplant before she is kidnapped. In the season finale, Krystle is followed by a mysterious stranger, while Clay and Ben plan to leave Denver following the inconclusive blood test to determine Clay's real father. Blake and Alexis show their love for Adam by adopting him legally, hoping to quell any of his lingering doubts of their love. The Carrington mansion is sieged by intruders led by a familiar face from the past, looking for Krystle.