Karl breaks up with Edie, who doesn't know that Susan is the "other woman"; Lynette tries to help Ed with his sex life; Bree discovers that Peter has another addiction; and Lily's father claims his daughter.

As Felicia Tilman continues her campaign against Paul Young, Lynette receives disturbing news, Bree reaches the end of her tether and Susan starts all over again. And for Gaby, Carlos and Xiao-Mei, baby makes four.