Teaser: Joey is bowling with Nicky and Alex. Main Synopsis: While at a local public library, Stephanie sees an attractive blonde haired girl planting a kiss on Steve's cheek. Stephanie doesn't want to say anything to D.J. until she's sure Steve is seeing another girl. That's why Stephanie and Kimmy break into Steve's apartment, so they can investigate. Stephanie and Kimmy are nailed when D.J. and Steve show up. The girl who kissed Steve on the cheek was his cousin Edie, who kissed him out of friendship, proving that Steve is not seeing someone else. D.J. goes ballistic and tells a stunned Stephanie to stay out of her life, because D.J. feels that by breaking into Steve's apartment, Stephanie has reached a new low when it comes to invading D.J'.s privacy. Stephanie goes home. Later, D.J. also goes home, and D.J. is still angry when Stephanie goes to D.J'.s room and tries to talk to her. Seeing how angry D.J. still is, Stephanie leaves the room, but D.J., who is beginning to feel guilt

Becky and Mark return home for Dan's high school football team's 20th anniversary party. It soon becomes apparent that there's trouble in paradise, so Roseanne schemes to break them up.

NOVA takes viewers on the ride of their lives as it explores the science of roller coasters, where physics and psychology meet. New rides of the future may take place entirely in the mind - with virtual reality.

When teenager Chris Pollit beats a fellow foster home resident to death, his lawyer seeks a not guilty verdict by reason of genetic defect, claiming that Pollit is genetically predisposed to violence because he has an extra Y chromosome.

Rita and Runt are on a bunny ranch operated by Happy Bob. Runt watches over the bunnies while Rita stays in the barn and chases rats. When Bob tries to take the bunnies to skin them for fur, Rita and Runt stop him. They set the bunnies free take them to a train to escape.

Mindy's mother gives her a new doll and throws out her old one. Mindy goes after the old doll and falls into a recycling bin. She is taken to the recycling center and Buttons follows to keep her out of danger. Mindy is put into a crate before she and Button manage to return home. After they get home, Button is scolded for getting the old doll out of the garbage.

In order to buy a birthday present for Dr. Scratchansniff, the Warners head to the Mall. They are constantly approached by two woman who want them to take a survey. The head to a number of stores and can't find the perfect gift. So, the Warners decide to give the survey ladies to Dr. Scratchansniff.