A scandal like no other hits the Walker family which causes Kitty to over-think her future.

In this 99th episode the family looks back to the events who made them who they are now. Tommy returns with surprising news, while his siblings all have to make very difficult choices. Kitty needs a break from her Life.

The Walkers are excited when Tommy comes down for a visit, but his new girlfriend's enthusiasm for Walker family history rubs the family the wrong way.

Nora and Sarah fly out to Washington DC to "surprise" Evan for his birthday, but what they're really after is the truth behind Kitty's extended trip to the east coast. Meanwhile, Kevin and Scotty are thrilled to have officially signed the papers to be Olivia's parents, but the excitement quickly fades when Olivia seems a little nervous about moving in and starting a new life.

When Olivia's brother shows up and sets out to gain custody of her from Kevin and Scotty, the Walkers struggle amongst themselves to determine what's best for Olivia.

Emotions are running high in the Walker family when Nora and Saul find out their mother, Ida, has passed away.

Nora finally gives in to her feelings for Brody, which leads to a spontaneous romantic getaway. Meanwhile Sarah and Luc closely consider growing their family, and a chance encounter with Michelle raises Scotty's suspicions about her whereabouts for the past several months.

Parenthood is questionable for more than one member of the Walker family, as Justin keeps a closely guarded secret about the true paternal identity of one of his siblings and Scotty makes a shocking discovery that will bring a new life into the Walker family fold.

After Sarah confronts Brody about his being her father, she decides she no longer wants him to be a part of her life or Nora's, but Nora just can't seem to let him go. Meanwhile, Olivia struggles with the new addition of baby Daniel to the family.

As Sarah and Luc’s nuptials approach, plans go horribly awry and the Walkers learn several surprising lessons about the real meaning of family, on the Series Finale of “Brothers & Sisters”.