Four more "suitcase nukes" are out there, and Jack's only lead takes him to the home of his brother.
For a lesson on parenting skills Chris is given an egg to take care of as if it were his child. When the electricity bill is over budget, Julius decides to figure out why. Drew a werewolf? That's what Tanya thinks so she's afraid to sleep.
When Ted is constantly insulted by his former boss, who is now working for him on a project, he is told to fire the man, but he finds that a hard thing to do. Meanwhile, Barney offers Lily a lot of money to paint a nude portrait of him.
Bellick gets a taste of the medicine he gave out when he was the Captain and Agent Mahone's ex-wife makes another appearance.
Matt reveals his abilities to his wife. HRG confers with Mohinder. Now that she knows the truth, Claire tries to make sense of her life. Hiro seeks the sword that he is destined to own. Niki must face the consequences of her decision to turn herself in to the police. Simone and Nathan are worried about Peter, who has been in a coma for two weeks. Peter meets a new hero. Micah visits his mother.
After Frank steps on a land mine at a crime scene Horatio and the Bomb Technicians must deactivate the bomb. Delko gets hit with a large lawsuit after breaking up a domestic dispute.
As tension builds between Grace and Boyd the truth about Lisa is revealed. Meanwhile, the team have a new lead following on from Declan's death and it's a race to find the murderer before Lisa does.
Lynn is crushed by discouraging news and considers leaving Los Angeles. Darnell constantly feels humiliated by the new owner at his old job.
Heidi finds out the results of her pregnancy test while Lauren and Whitney are asked to cover a major fashion show. Meanwhile, Audrina turns Spencer down when he asks her out on a date.
Brent neglects to get Emma a present for Mother's Day, causing her to see red. To make matters worse, Hank shows up with a present, creating a rivalry in Emma's mind. Oscar takes full advantage of the situation when he realizes that he can get away with anything, due to Emma's distraction. Lacey and Davis try to out-embarrass each other, while Karen and Wanda have some trouble putting together their purchase from a Swedish Superstore.
A young school girl is raped and murdered, but D.C.I. Connor still has no leads a month into the investigation. When Walker orders a review of unsolved cases, they turn up similar cases of raped and murdered teenage girls over the last ten years, and they find themselves searching for an apparent serial killer.
Jake shares that he has heard his mother having sex with her fiancée, Herb; this revelation brings up a repressed memory for Charlie. This leads Charlie to seek help from Rose.
Gabrielle cannot avoid Zach. Mike's new lawyer suggests he pleads guilty, but Susan doesn't agree with that. Gloria informs Bree that she and Alma believe Bree is the other woman. Instead of going back to work Lynette pretends to be ill so she can help Tom promote the pizzeria at a food fair.
A young boy wants to hire Harry because he believes that monsters are after him and his mom. Harry doesn't want to take the kid's money, but he also knows from his own experience that a child's monsters are often all too real.
Eric and Lucy tell everyone that they're going out of town on "offical church business," which isn't exactly true, while Annie and Kevin seek the truth about their spouses' little white lies. Meanwhile, Sandy takes over Lucy's teen class for the day, and Ruthie will do anything to prove that she is not a little girl anymore.
Lu and Jordan are working together on the suicide of a teen. A note left by the teen suggests that he had been molested. A woman has been hit by several cars on a freeway, Woody is investigating. Later an investigator pops in and starts digging around. Dr. Macy offers Jordan a word of advice; Lily gets some surprising news.
The family throws a party for Nora's sixtieth birthday. Surprises- but not the good kind- abound when half the family gets the flu, Nora's mother shows up, and the video tribute doesn't come out quite right.
Orel learns about the significance of religious symbolism. In an accident, Dr. Chosenberg gets an image of Jesus in a wound. Nobody from the town wants to treat it because they see it as a sign from Heaven.
When a young artist disappears, the team is concerned that one of her subjects may have been unhappy with her work.
A young school girl is raped and murdered, but D.C.I. Connor still has no leads a month into the investigation. When Walker orders a review of unsolved cases, they turn up similar cases of raped and murdered teenage girls over the last ten years, and they find themselves searching for an apparent serial killer.