Since Derek already has a girlfriend, Casey is shocked when he asks out a friend of hers. She tries to get him to do the right thing before she does it for him.

George and Nora plan a joint birthday party for Lizzie and Edwin. It's a fiasco until Casey and Derek reluctantly provide emergency help.

Derek turns out to be the world's worst babysitter, so Edwin invites his friend Teddy over to stir up some trouble.

Casey risks losing her 'cool' status when Nora tries to recruit her new friends to help at the high school fun fair.

Casey and Derek both land jobs at the same restaurant, and things don't go quite as Casey expected.

Edwin and Derek both battle school bullies, and when Casey finds out about the one who's threatening Derek, she does everything she can to thwart the potential showdown.

Casey tries to film a heartwarming saga of a blended family for her school project, but her family members won't cooperate.

When Derek gets bumped up from the chorus into a lead role in the school musical, Casey gives him some advice so he won't ruin the show.

Derek sneaks out of summer school and injects some fun into Casey's dull camp curriculum; Edwin and Lizzie set up a lucrative pet sitting business.

Derek switches test papers with Casey, and then lures her into a scheme that will keep them both out of trouble.

George and Derek's mother Abby are dismayed Derek is failing Spanish and decide that he should live with Abby in Spain for six months.

When Casey lectures Derek and Edwin for watching scary movies which she finds silly and fake they take her admonishment as a dare to scare.

The family stages an intervention to convince George to buy a new car; Derek faces the scary possibility of spending his 16th birthday at home with his family.

Derek falls in love with a waitress at work. Too bad she already has a boyfriend.

When Christmas plans go awry, Aunt Madge encourages Derek to help restore the family's holiday spirit.

Idealistic Casey expects her boyfriend Max to be as chivalrous as the literary hero Ivanhoe.

After Derek breaks up with Kendra, so he won't have to buy her a Valentine's Day gift, Kendra asks Casey's crush Max to the Valentine's Day dance.

When signals get crossed, Derek thinks he has a chance with Sally, and Casey is sure Max is going to dump her.

Casey's hopes for the Sweet 16 of her dreams are thwarted by an unexpected trip to the hospital.

Casey is thrilled to get her driver's license before Derek, until she gets stuck playing chauffeur to her younger siblings.

Casey's dream of a romantic prom night turns into a nightmare when Derek accidentally ruins her dress.

Casey tries out for the school cheerleading squad. But not even her phenomenal dancing skills are enough to get her acceptance, especially when the head cheerleader is Max's ex-girlfriend.

Casey develops mysterious allergies after Max gives her his football jacket.

Grounded for the weekend, Derek and Casey put a dent in George's car when they try to sneak out to a party.