District Attorney Harvey Dent hides a deep dark secret--he has a second personality, Big Bad Harv, a tough gangster.
Martin is having trouble with his toilet and tries to fix it himself. After he's made a wreck of things, Gina finally convinces him to hire a plumber to come out and fix it. But the when the plumber seems to be taking a very long time to complete the job, they find his body collapsed on the floor. What should they do now? Can they revive him, or is it too late?
Rebecca's smoking gets her into big trouble when she accidentally starts a fire in the bar, and blames it on faulty wiring.
Pete and Goofy get into it about their boys on the baseball team, much to the boys' dismay.
Bart leads an uprising at Krusty's summer camp after he and Lisa are subjected to a Dickensian sweatshop.
Jerry's dad has a bad time at the back doctor's; Elaine wants to part with her boyfriend; Jerry's unhappy with George's network "negotiating."
Young, urban newlyweds Paul and Jamie Buchman try to sustain their marital bliss while sidestepping the hurdles of love in the '90s.
Alfred and his friend, Maggie Paige, visit a health spa that is actually run by the nefarious Poison Ivy.
While Kevin tries to take his relationship with Winnie another step, Wayne's friend Wart returns from Vietnam a changed man. Kevin decides to steal the opposing team's mascot at the homecoming football game, but the childish prank is overshadowed by a realization of how Wart has been affected by the war.
When a sleazy photographer is murdered, his models appear to be the most likely suspects.
Tim still lets Brad off the hook and go to the planned truck rally after he pulls a prank at school, until he throws rocks at a greenhouse.
Brandon and Brenda are at each other's throats after their parents reveal that they can only send one child to an out-of-state college. Jim and Cindy decide to take a second mortgage so that they won't have to play favorites, but Brandon and Brenda each decide to apply to local California University. Brenda fears that she and Dylan are growing apart, while he and Kelly bond over their mutual ambivalence toward college. Andrea believes that Gil is discouraging her from applying to his alma mater (and her dream school), Yale. She has nightmares about Gil trying to knock her off a tightrope. Music: ""Venus"" by Shocking Blu
Someone's calling CTOK radio's on-air psychiatrist and murdering women on the air. Dr. Noble comes to Nick's aid -- to Stonetree's dismay -- while Schanke searches through psychiatric records. Noble thinks the killer is acting out a murderous fantasy -- one that may involve her.
The Joker employs a lethal mind-altering laughing gas to transform the citizens of Gotham into total fools.
October 5, 1957 - November 22, 1963: As a result of leaping again before he had a chance to complete his original mission, Sam finds himself leaping back and forth through the life of Lee Harvey Oswald. Following the sole assassin theory, Sam and Al attempt to prevent Oswald's attack on John F. Kennedy. But, with each leap giving Oswald more control over Sam's body, history seems doomed to repeat itself.
As the episode opens, Æon and Trevor are kissing through the windows of their transports, with the former being in a plane and the latter being in a train. As they do, Trevor uses his tongue to open up Æon's fake tooth and place a rolled up picture inside. After the two of them part, Æon spies an industrial vehicle driving past. Æon then retrieves the picture from her tooth to find it is a photo of a fellow passenger, and a suitcase. She climbs out and moves along the side of the plane to spy on the man, who is reading documents from the same suitcase. Æon must jump mid-air to the back of the plane to get inside, but she misses and falls ...