Katherine and Mark (Morgan Brittany, John Beck) are seen in this 1983 publicity shot from “Hell Hath No Fury,” a sixth-season “Dallas” episode.
Between the Lines and Behind the Scenes of "Dallas"
Between the Lines and Behind the Scenes of "Dallas"
Katherine and Mark (Morgan Brittany, John Beck) are seen in this 1983 publicity shot from “Hell Hath No Fury,” a sixth-season “Dallas” episode.
Dallas Decoder 
In my opinion, Mark and Katherine could have made a great couple, making trouble for Bobby and Pam. Or even Mark and Jenna together could have caused problems for the latter! This is a great photo of John Beck and Morgan Brittany, by the way!
Jennifer, I agree: Look at John Beck and Morgan Brittany. What a handsome couple!