Episode 17: All in the Family
Nora invites her late husband's illegitimate daughter to a family dinner at the Walker house against some of her children's wishes. Kevin's relationship with a movie star reaches new levels and Nora has an interesting encounter with her college professor.
Episode 18: Three Parties
Sarah accompanies Kitty to Senator McCallister's hometown to interview local residents for his upcoming election campaign. Rebecca asks Justin to attend a house party with her, which ends with Justin getting a black eye. Chad makes a surprising decision to come out that affects his relationship with Kevin in a negative way. At the advice of her best friend, Nora asks her professor out on a date. Kitty returns to L.A. with new insight on McCallister and admits that she's falling in love with him.
Episode 19: Game Night
Kitty sets Kevin up on a date without telling him that it's with the republican Senator's gay brother. Kevin ruins the date by going on a rant against the Senator. Nora and Kitty set up a game night against a rival family they lost to years ago. Rebecca is invited by Sarah to come, but she loses the game for the Walkers. The day after, Rebecca tells Justin that Joe kissed her.
Episode 20: Bad News
Joe tries to confess to Sarah about the kiss, but before he can get enough courage, she receives the news from the most unexpected person. When Nora fails her writing class, her teacher allows her to pass on one condition - she must go on a date with him. And Kitty has to calm the Senator down after a disastrous helicopter crash.
Episode 21: Grapes of Wrath
The vineyard opens up and the whole family attends. Holly also makes a move on Mark when Nora is gone.
Episode 22: Favorite Son
Kevin acts as McCallister's attorney when a radio host makes accusations against his war heroism. Tommy and Julia must face a tough decision regarding their newborn babies.
Episode 23: Matriarchy
Nora organizes an engagement party for Kitty and Robert. Justin is about to be deployed to Iraq, and he tries to have special time with his family members to say goodbye. Kitty finds it hard to tell her mother that she will be moving out. An old friend of Saul's visits after his divorce.
Sources: tv.com; imdb.com; wikipedia.com