"Dallas: The Complete Twelfth Season" - really season eleven when you realize that the first was just a trial mini-series - might be described as the experimental one. It could be divided into four segments, tied together with enough major and minor developments to make it cohesive.
The segment which started the season is "Let's give J.R. a young bride." This storyline puts our hero (Larry Hagman again giving Emmy-worthy performances) in mortal peril by a pair of yokels (Cliff Potts and Sherman Howard) that he runs into after he has taken their young sister to bed. The eldest Ewing son finds himself a member of a chain gang, an escapee, and eventually the husband of the much younger Callie, wonderfully played by Cathy Podewell).
From that storyline the show moves to "Let's see how Sue Ellen gets her revenge." This the former Mrs. J.R. Ewing (Linda Gray) the opportunity to plan for the ultimate "payback," as the producer of a film that will reveal to the entire world how ruthless her former spouse is.
Then, the plot intertwines with "Let's see who will replace Bobby's beloved Pam." Bobby (Patrick Duffy) is involved with not one, not two, but three women during this season: an old flame from his past (Irena Ferris), a new one (Beth Toussaint), and one who is trying her best to get on his good side and his into his bed (Sheree J. Wilson). By the end of the year, Pam becomes a memory and the youngest Ewing son has found her replacement.
Finally, the season ends with "Let's show Dynasty how it's done and REALLY go to Europe." Like its chief competition, Dallas has a storyline where many of the principal characters go to Europe, but the cast and crew did go wherein "Dynasty's" European trip was on a Hollywood set. The trip allowed for some magnificent locations which made up for a rather lackluster ending to the season.
As the season progresses, the show will see the departure of several major characters which would leave the next two years spent seeking to continue this "experiment" with new players to interact with the one reason for the show's existence in the first place: J.R.