A man is found in a dumpster with a very full stomach. A divorcing couple are found dead together on the floor of their house, where their dog becomes the first suspect.
Ash finally arrives at the third Battle Frontier location where he challenges the Battle Dome Brain Tucker to a match. The battle begins with Ash using his Swellow and Corphish against Tucker's Arcanine and Swampert. During the battle, Ash learns how to combine his Pokémon's attacks and uses their power to defeat Tucker.
The Doc deals with a strange family who seem reluctant to let him make house calls, and whose passion for taxidermy seems to hint at a dark secret involving their missing mother. PC Mystow also has family problems when his overbearing sister moves in a sets up shop - much to the Doc's disgust - as a herbalist. A chance remark by Pauline sets Al on a path that could well destroy his relationship with Bert.
Chris and Greg fall out when they break the rule of 'no computer games' after school at Greg's house. Back at the Rock home, Tonya is missing Chris as she can't blame everything on him.
Tulkinghorn is now close to piecing together Lady Dedlock's secret. Esther struggles to come to terms with the terrible blow she has been dealt. Jarndyce agonises over whether to keep his own feelings for Esther concealed. Lady Dedlock tells Esther something that will change her life for ever.
Andy tries his luck at a TV phone-in competition. Mrs. Emery visits the post office. Vicky starts her new job working on an adult chat line. Dudley catches Ting-Tong doing something unlady-like in the toilet. After another fight with bubbles, Diseree loses more than her towel. Linda assists with a course change for a female student with a slight facial hair problem. Majorie becomes jealous when her new boyfriend starts being friendly with Tanya. Daffyd introduces Myfanwy to his new... girlfriend? Mr. Mann is looking to buy a painting of a disappointed horse. Don takes Pat to an Indian restaurant, where the food has an unusual effect on him. Maggie is recovering well from a kidney transplant, until she's given the name of the doner. Sebastian serenades the PM in the Houses of PaliamentAndy decides to make a trip along the River Thames slightly more interesting.
Another player is fired when the players face off in the fragrance industry.
Jude finds himself a new goldfish friend named "Fish". Meanwhile, Nikki snaps at Caitlin, after Caitlin keeps telling stories to her friends about her new crush, Wade, which leads to Caitlin and Nikki being no longer friends. After the gang is forced to take sides they try to get Nikki and Caitlin back together.
Gina is planning a family Thanksgiving. Joey and Zach discover some ancient Native American artifacts on Joey's property and mistakenly give them away.
Mac, Danny and Lindsay investigate the death of owner of a doll hospital. Stella and Hawkes look into the death of a woman with terminal cancer.
Will Truman and Grace Adler are best friends living in New York, and when Grace's engagement falls apart, she moves in with Will. Together, along with their friends, they go through the trials of dating, sex, relationships and their careers, butting heads at times but ultimately supporting one another while exchanging plenty of witty banter along the way.
The deaths of three women with the same name lead Fontana and Green to the nine-year-old conviction of Leland Barnes, who had shot and killed his wife in an office full of people. With two of the three witnesses against him dead and Jack McCoy on the hit list, the detectives struggle to determine how Barnes, who has been in prison the entire time, got someone on the outside to kill the only people who could keep him in jail. The investigation leads them to Leland's two sons, with surprising results.
Kim and Christine are unusually attentive to Greg and Jimmy after spending an evening listening to a critical husband constantly belittle his wife. The girls don't want to spend any more time with the couple, but Greg and Jimmy encourage the relationship in hopes that their good fortune with their wives will continue.
Russell is suspected of committing a double murder. Larkin discovers Russell's criminal history and wonders about who he really is. Mariel insists that she saw a body in the water and demands that the bay be dredged.
When Xana possesses Kiwi, it turns the little dog into the carrier for a virulent virus that turns those it infects into zombies. To make matters worse, Aelita and Jeremie are stuck in the cafeteria and can't get to the factory. On top of that, Odd is a zombie himself. Jermie and Aelita escape but Ulrich and the other students (except William, who is turned into one himself) fight the rest.
Veronica helps Keith determine who is haunting a school bus crash victim's parents, currently embroiled in a suit against the school district for negligence.Meanwhile, after Logan asks for help fighting the murder charge against him, Veronica stumbles
Elle, along with many others, is held hostage on a train in Texas by a paranoid schizophrenic who is convinced that the U.S. government is monitoring him. Hotchner and Gideon are forced to play into the man's fantasy to save the people he has taken hostage.
Violence erupts when Ana Lucia and her group stumble upon Sayid and the other castaways on the island. Ana Lucia holds Sayid captive. Kate and Jack care for Sawyer when Mr. Eko brings him back to the camp himself. Flashbacks reveal Ana Lucia's troubled life as a cop.
Michael starts monitoring the emails sent out in the Dunder-Mifflin workplace, upsetting the employees. Meanwhile, Pam believes that the relationship between Dwight and Angela is more than just worker to worker, Jim throws an office BBQ at his house in order to show his roommate the kinds of people he deals with everyday, and Michael, after annoying everyone at his improv classes, crashes Jim's party with a terrible karaoke number.