Dallas

 In the "Dallas" TV series, John Beck played Mark Graison, who became Pamela "Pam" Ewing’s lover and eventual fiancé after her first divorce from Bobby Ewing. Pam, originally married to Bobby, went through a tumultuous relationship marked by Ewing family conflicts. After she and Bobby divorced, Pam began a relationship with Mark Graison, portrayed by John Beck. This relationship was introduced to add drama and conflict to Pam's storyline, especially during the show's "dream season" (season 9). Mark was a wealthy businessman who became important in Pam’s life during her separation from Bobby. However, his character faced challenges, including a terminal illness and a plane crash, leaving Pam searching for him and unable to fully move on. The producers aimed to get the audience to root for this new chapter in Pam's love life, even though eventually, Pam and Bobby would reconnect.