With the show's popularity soaring in the fourth season (now the third most watched program of 1983-1984), former President Gerald Ford guest-starred as himself in 1983, along with his wife Betty and former Secretary of State Henry Kissinger. New characters included the charming and ambitious Farnsworth "Dex" Dexter (Michael Nader), the scheming Public Relations assistant Tracy Kendall (Deborah Adair), the unscrupulous playboy Peter de Vilbis (Helmut Berger), and Blake's illegitimate African American half-sister, Dominique Deveraux (Diahann Carroll). 　　The main storylines included a custody battle between Steven and Blake over Steven and Sammy Jo's son Danny, and a false accusation of illegal weapons dealings orchestrated by Alexis to ruin Blake's financial empire. 　　In the season finale, Fallon disappears just before her second wedding to Jeff (now divorced of Kirby) as her car seemingly collides with a truck on a stormy night (to accommodate the departure of Pamela Sue Martin from the series), while Alexis is arrested for the murder of Mark Jennings. 　　译文(3): 随着该剧在第四季的人气飙升（现在是1983-1984年收视率第三高的节目），前总统杰拉尔德·福特于1983年与妻子贝蒂和前国务卿亨利·基辛格一起客串出演了自【资源囤-ZiYuanTun.Com】。新角色包括迷人而雄心勃勃的法恩斯沃斯“；Dex”；德克斯特（迈克尔·纳德饰）、诡计多端的公共关系助理特蕾西·肯德尔（黛博拉·阿代尔饰）、肆无忌惮的花花公子彼得·德维尔比斯（赫尔穆特·伯杰饰），以及布莱克的非裔同父异母妹妹多米尼克·德弗罗（迪亚恩·卡罗尔饰）。