Claire tries to help Luke cope with the death of a neighbour; Phil and Alex spend some time together; Haley throws a party without permission; Cameron's father visits.

A series of crises on Mitch and Cam's wedding day put Pepper to the test. Meanwhile, Phil gets an eye procedure before the celebration, and Claire embraces the role of best woman.

Chaos forces Mitch and Cam to move from one contingency plan to another, but an unexpected turn of events allows the day to move forward.

Sheldon and Dr Sturgis have their first argument when Dr Sturgis marks an answer wrong on Sheldon's test; Mary fills in for Pastor Jeff when he falls ill.

Three years in the past, Lucas's offer to Peyton while visiting her in Los Angeles will change their relationship forever.

Billy and Cody move to North Dakota with the hopes of striking it rich in the oil business. They meet oil baron Hap Briggs.

It is the aftermath of the robbery and evidence points to an inside job at Briggs Oil. Wick is struggling to hide his involvement.

Nathan must face Haley and Jamie after being released from the Chiefs; Peyton and Lucas receive an unexpected visit from Karen.

Billy turns to Clifton for help with getting his revenge; Wick is planning a large party for Jules; a huge confrontation means AJ must make a decision.

Owen travels to Los Angeles to confront his estranged father and some painful childhood memories; Wyatt acts out and prompts Judd to take him to his family ranch, where an emergency brings them closer together.

Sheriff Tip tells Hap that Wick may have more to do with the robbery that he is letting on; Lacey joins the family business; Billy tries to blackmail Hap.

Cody is attacked and everybody unites, Billy and Wick work together to find out who is responsible. Meanwhile, Carla is getting suspicious of Hap and Jules.

Carla tries to expose Hap's affair, while the federal agents investigating Hap approach Wick for help.

Owen and the crew race to a gender reveal party gone horribly wrong; a father and son get trapped in a cave during a caving excursion.

A very brokenhearted Klinger loses his wife for the second time.

Roxy struggles with moving away from her friends; Joan prepares for a hurricane; Denise and Frank celebrate Molly's first birthday.

Owen helps TK reconcile the past; Judd and Grace aid Judd's ageing father; Michelle learns the full truth about her missing sister Iris.

Enraged Ray holds J.R. responsible for Mickey's accident; Pam wants a divorce; J.R. and Ray get into a fight, causing a fire at Southfork.

Miss Ellie is rescued from Jessica's clutches; Clayton and Miss Ellie marry; Peter threatens to kill J.R.; J.R.'s many enemies converge.

A mystery is looming in the long-running super saga about those feuding, financially-comfortable Texans. Cliff uses his new-found power as assistant DA to investigate the mysterious body found at Southfork.