Nora has a Valentine's Day dinner with a friend and takes a risky ride that could land her in trouble.

Sarah and Joe go into therapy following the tensions of their marriage. An office poll unsettles Kitty about her relationship with Senator McCallister.Tommy bumps into a concealed member of the Walker family while Tommy and Julia learn about a surprise addition to the family.

Rebecca's suspicions arise after Justin makes an almost miraculous recovery. Kevin pushes Saul to the edge to get some answers. Nora, Sarah and Kitty decide to go to a spa. Tommy tries to make friends but ends up in an embarrassing situation.

In an attempt to solve Scotty's financial issues, Kevin offers to file domestic partnership papers with him. Meanwhile, Nora meets with an interior decorator in an attempt to try and make a fresh start and the Walkers' attend a fundraiser for cancer research.

Nora gets ready for a new charity venture by getting rid of all of William’s belongings. Meanwhile, Robert begins to interview possible replacements for Kitty; Holly looks into the location of William’s son; and a time capsule brings two of the siblings closer together.

The Walkers encounter some conflicts in the schedules on Thankgiving; leaving Nora & Sarah alone to celebrate; Elizabeth endures a medical emergency that brings the family together.

Desperate to get through to Tommy before his legal troubles worsen; Nora reaches out for help to the person whom he hurt most deeply. Meanwhile, Ryan Lafferty gets a bit too close to Rebecca for Justin's comfort

Kitty, Robert and Nora struggle to accept Kitty's cancer and to come to an agreement on the best possible treatment, but as they prepare to share the news with the entire family, a surprise visitor from afar makes the burden a bit easier to bear.

In the throes of chemo, Kitty is thrilled when a surprise visitor comes to town, while Sarah finally realizes that she has to tell her kids about Luc (Gilles Marini as Luc Laurent). Meanwhile, with Ryan and Rebecca’s help, Holly finds a way to keep her financial future from unraveling, and Kevin and Scotty finally agree on a possible surrogate.

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.

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.

Kitty continues her stay in Ojai, trying to reinvent herself, when she meets a handsomely rugged handyman, Jack. As Kitty fakes her persona to seem like a local, she winds up in a situation that proves that honesty usually is the best policy. Meanwhile, the rest of the Walkers are in on a little surprise birthday celebration for Sarah; what they all don't know is that Sarah has been lying to Luc about her age to appear younger... It's hard to keep up with the truth.

Nora's motherly skills and advice catch the attention of a radio producer who invites her to audition for a new show. But when Nora follows through with the invite, she suddenly finds herself out of her league, competing with a famous personality, Dr. Alexandra Kirby. Meanwhile, as Kevin and Justin go through some life lessons of their own, Kitty heads back into the dating game with her Ojai handyman, Jack.

Justin suddenly takes a much more keen interest in Holly's recovery after a nurse (guest starring Odette Yustman as Annie) at the hospital catches his eye; Nora's fellow radio host, psychiatrist Dr. Karl, finds his way into Nora's heart when he helps Sarah and Kitty resolve some old sisterly squabbles; and Paige helps Kevin and Scotty find forgiveness.