Susan meets her ex-husband, Karl (guest star Richard Burgi) at a Lamaze class, and finds out that he has remarried and is having another child. Lynette learns who was responsible for starting the fire at Rick’s restaurant. Bree wants Orson to turn himself in to the police. Gabrielle rents a room to a hip artist, Ellie (guest star Justine Bateman), who has a dark secret. Dylan continues meeting with her father, Wayne (guest star Gary Cole), and Katherine decides to go spy on her.