Dallas

With Nicolas' arrival, John Ross tries to keep his plans moving forward, locking horns with Bobby in the process. Emma enlists the help of her grandmother (JUDITH LIGHT).

Bobby scrambles to outmaneuver John Ross' efforts to frack on Southfork. Christopher makes a startling discovery about Nicolas' past, as Nicolas and Elena's partnership heats up.

It's wedding day at Southfork and the groom, John Ross, has skipped out to strike a deal with a family adversary. AUDREY LANDERS, STEVE KANALY and CHARLENE TILTON) guest star.

Christopher learns surprising details about Heather's (ANNALYNNE McCORD) past and Cliff (KEN KERCHEVAL) persuades Elena to try a new tact. STEVEN WEBER appears as the Governor.

John Ross scrambles to keep the Arctic lease deal alive, even if he must betray those who love him most. Ryland's plot to keep Emma and John Ross apart takes an unexpected turn.

John Ross pushes ahead on his plans for control of Ewing Global, enlisting the help of one of J.R.'s last business partners. Elena's brother, Drew (KUNO BECKER), returns to Dallas.

Pamela's discovery that John Ross has been sleeping with Emma ignites a firestorm. As cliffhangers build, lives and relationships are brought to the brink.

The Ewing family searches for answers as to who set the fire at Southfork Ranch and who will survive. John Ross and Emma struggle with their role in Pamela's overdose.

Christopher and Heather's (ANNALYNNE McCORD) relationship is tested as John Ross tries to redeem himself with Pamela. Elena makes a drastic move to get justice for her family.

Elena finally confronts the Ewings. The family is shocked, realigning relationships and forcing Bobby to re-examine the steps he took to implement J.R.'s master plan.

As Ewing Global goes public, everyone scrambles to claim ownership. Bobby seeks the aide of old flame (MELINDA CLARKE) to help get back control of the company.

Elena learns the truth about Nicolass connections to the cartel, which sends her spiraling and Christopher fears for her safety. Bobby must make a choice he never anticipated.

Nicolas tries to prove himself to Elena by making a deal with the authorities that puts him on a collision course with John Ross' plan and places both their lives in jeopardy.

In the season finale, enemies are unmasked, new alliances are formed and John Ross learns a shocking secret about J.R. that sends him in search of a surprising new cohort.