Mary-Kate's friendship with an unpopular girl threatens Ashley's chances of making the cheerleading squad; Kevin ditches class for a baseball game.
The twins want Kevin and Carrie to become a couple just as she is set to leave.
Ashley secretly uses her dad's credit card on the Internet; Kevin wants to break up with Nancy.
The twins each get a 'husband' for a school project on marriage.
The girls' fun-loving uncle takes them to a hockey game.
Ashley's school fund-raiser falls short; Kevin dates Carrie's friend.
The twins want Carrie to move in with them when she is evicted from her apartment.
Mary-Kate coaches her sister when Ashley falls for a sports fanatic.
Kevin poses as Carrie's fiance to impress her ex-beau; twins have a party.
A feud causes the twins to move into separate rooms; Carrie dates Kevin's doctor.
Mary-Kate takes lessons when she learns the boy she likes is a good swing dancer.
Carrie shares her yuletide traditions when she spends Christmas Eve with the family.
The twins think they see their kindly neighbor, Mrs. Baker, commit a murder.
A teen fashion magazine picks tomboy Mary-Kate over Ashley to model for a layout.
Feeling left out, Mary-Kate sabotages Ashley's friendship with another girl.
Kevin tries to help Ashley through her first romantic crisis.
Kevin teaches the girls a lesson when they sneak off to Carrie's Halloween party.
Fearing they'll lose Carrie, the twins try to keep Kevin and his new flame apart.
Ashley learns the boy she likes has invited Mary-Kate over to shoot hoops.
Ashley learns Mary-Kate has had her first kiss, making her cool in their pals' eyes.
Ashley sits in as Mary-Kate for a math lesson with a cute tutor.
A science professor hires a part-time nanny for his twin daughters.