Harrison Xu

Hanna needs Mona's help in order to save her mother from a conviction; Spencer revisits an old haunt; Emily reconnects with her former boss; Aria and Jake are confused by the nature of their relationship.

Ava's father and his family come to visit, but she soon realises that they are more interested in meeting the celebrities on her show than spending time with her.

Erica takes charge of the Fifth Column, and leads its members in a risky attack on Anna, who finds an obstruction in her plan to destroy humanity. Meanwhile, Ryan sneaks back onto the Mothership in a bid to rescue his daughter.