Kitty guards a devastating secret that could change the Walker family forever. Meanwhile, Nora and Holly work together to thrown an engagement party for Justin and Rebecca; Tommy remains in Mexico; and Sarah heads to France.

Robert worries about the ramifications of the news of his recent heart attack hitting the press, and Kitty struggles with a secret that may harm her marriage to Robert but bring the Walker family together. Meanwhile, Kevin and Scotty discuss surrogacy.

Kitty, Robert and Nora are struggling over Kitty's cancer and which possible treatment to seek. But as they prepare to bring the news to the family, a surprise visitor from afar helps ease their burden.

After returning from France, Sarah manages to distract Kitty through her chemo treatments by using tales of her romance with a French artist. Meanwhile, Justin has problems with his anatomy class and seeks his professor for help with surviving the semester with his teenage genius lab partner.

The Walker family, with the exception of Nora, are surprised by the charms and tango lessongs of Luc Laurent, Sarah's new lover. However, Nora quickly uncovers that her French houseguest is a very good comfort during a very difficult time. Meanwhile, Robert needs to distract Kitty from the cancer, and he uses his most romantic efforts into the situation.

Kitty is elated when she hears about a surprise visitor coming to town, while Sarah tries to find the best way to tell her children about Luc. Meanwhile, Holly uses Ryan and Rebecca to help her keep her finances intact, and Kevin and Scotty pick a surrogate.

Kitty is devastated when she must face the aftereffects of her cancer treatment. Meanwhile, Nora makes an unexpected friend; and Scotty's father shares some shocking news about his marriage.

The Walkers wait in suspense to see if the company behind their newest wine can be saved. Meanwhile, Rebecca and Justin both have life-changing news to tell one another; Nora develops a crush on a younger man; and Luc and Sarah begin to realize their relationship may not have the connection they thought they had.

Justin and Rebecca both keep secrets from one another that may result in their relationship ending. Meanwhile, Holly's financial situation takes a turn for the worst; and Sarah becomes jealous of Nora's romance.

Justin and Rebecca's wedding plans take an unexpected turn. Meanwhile, Tommy takes a risk in order to make sure he can bring his daughter to the wedding.

As Kitty's lymphoma reaches a dire stage, the Walker's frantically search for a donor.

Sarah becomes interested in a divorced dad at Paige's school. Meanwhile, Justin learns what may be behind his learning challenges, and Nora reunites with a man from her past.

Sarah is excited to have a new romantic interest, while Kevin and Scotty wait on news about their first try at surrogacy. Meanwhile, Kitty and Robert square off over politics when Kitty's friend gets involved in areas in which she does not belong.

Robert and Nora lend a hand as guest chefs at Scott's restaurant in order to boost business. Meanwhile, Kitty decides to have the family vote on whether or not to run for Robert's senate seat, and Sarah becomes frustrated with Roy.

The Walker family shares love and loss on Valentine's Day as Sarah rediscovers the love of her life, Kitty makes a grand but heartfelt entree in to politics with her family and new campaign manager by her side, Justin and Rebecca face the struggles of impending parenthood and Holly makes a tough decision about what to do with her shares of Ojai.

Source: ABC

Luc's visa issues cause monumental problems for Sarah, who not only struggles with her feelings for him, but worries that she might lose him again - this time to another woman. Meanwhile, Rebecca wrestles with Justin and with herself to move on after a huge loss, Kevin discovers breaking up with Robert is hard to do, and Holly thinks she has found the hidden value of Ojai Foods.

Source: ABC

Kitty's newfound fame creates havoc for Luc and Sarah, as Luc faces possible deportation. Meanwhile, Nora swallows her pride and reaches out to Tommy to help her save the company from the Walkers' longtime nemesis, Dennis York

Source: ABC

The Walkers try to identify the secret that Dennis York is holding over their heads; Holly and Nora investigate Oaji's hidden worth.

Source: ABC

In an effort to get to the root of the secret that William's nemesis, Dennis York, holds over their heads, the Walkers recall their memories, both good and horrifying, of their family's days at Ojai Foods in 1986. Then, as they continue to flashback to their younger days, they finally recall the shocking secret and the shameful cover-up that led to York's power play, and are forced to deal with the remorse of a tragic event. Meanwhile, Nora and Holly take an uncharacteristic trip, a la "Thelma & Louise," to search for answers about Ojai's hidden worth, and Justin and Rebecca finally get their happily ever after.

Source: ABC

Still reeling from discovering secrets about his childhood, Kevin refuses to attend his birthday party; Tommy, Justin and Kevin confront Dennis.

Source: ABC

More than one member of the Walker family suspects she might be pregnant, Nora offers to take her aging mother in (Marion Ross) when it's discovered she has dementia, and Luc gets an exciting delivery in the mail,

Source: ABC

The Walkers seem to all being going through an adjustment period, as Cooper acts out against Sarah while Luc becomes a member of the family, Justin has trouble finding the same passion for medicine that he had while serving in Iraq, and Kevin struggles with his newfound unemployed status.

Source: ABC

The Walkers are heartbroken as they prepare to shut the doors of Ojai Foods for good, but new opportunities and secret alliances develop as a result of the family's loss.

Source: ABC

As the Walkers try to cope with the sadness and financial ruin that lingers as a result of the closure of Ojai Foods, they discover a small ray of hope in one of William Walker's many secret investments. Meanwhile, Robert's health and the safety of his family are compromised when he finds himself in way over his head in a subversive business deal, and newlyweds Justin and Rebecca consider a trial separation, on the Season Finale.

Source: ABC