Isabella Rae Thomas

Olivia's brother shows up and sets out to gain custody of her. Will Kevin and Scotty get to keep her or will Brian become legal guardian? Elsewhere, Lily goes missing, Luc finally gets his own show at the gallery, and Kitty interrupts Seth's date.

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

As Sarah and Luc's wedding day approaches, plans go horribly awry and the Walkers learn several surprising lessons about the true meaning of family.

Kevin and Scotty sign the adoption papers and try to make Olivia comfortable in their home. Meanwhile, Justin's homeless vet friend is now working at Scotty's restaurant, Paige is upset when she is dumped by a boy she likes, while Nora and Sarah go to Washington for Evan's birthday party. There, they also to catch up with Kitty.

Nora finally gives in to her feelings for Brody. Meanwhile, Sarah and Luc discuss family matters and a chance encounter with Michelle raises Scotty's suspicions about her.

Emotions are running high in the Walker family when Nora and Saul find out that their mother Ida has died.