Season four of the primetime soap begins right where the third left off, with Krystle and Alexis trapped in a burning cabin. Mark rescues them but becomes the one accused of arson and attempted murder until Alexis finds out that Joseph was the real culprit. Later, Fallon and Jeff uncover evidence suggesting that Adam poisoned Jeff, but Adam frames Alexis for it. Blake offers Krystle a public relations job before they get remarried and she later gets pregnant. Meanwhile, Steven and Blake fight over little Danny because Blake believes that a homosexual cannot provide a proper role model. As Alexis tries to ruin one of Blake's business deals, Kirby finds out the truth about her father's suicide and tries to kill Alexis. Alexis gets in more of a mess when Mark falls off her balcony and dies following a quarrel with her. In the season finale, Alexis is arrested for Mark's murder, Sammy Jo reveals the culprit behind Claudia's mystery calls and Fallon suffers a seizure and drives off as her wedding is about to begin.