S1 E1 • La vie avec Derek

Casey finds her room in the new house too small to live in so she asks the parents to have Derek's room. It turns out in a battle between the two stepsiblings to determine who will have Derek's room.

Première diffusion : 18 septembre 2005

S1 E2 • Plus dure sera la chute

Casey trips at school on the staircase (and takes it out on innocent bystanders) after Derek insults her. Derek can't stop laughing as he and his best friend, Sam, look on. Derek nicknames her "Klutzilla", a name that quickly spreads throughout the school. The whole school is "watching out" for Klutzilla and she blames it all on Derek. A second incident happens when Derek insults her again and she falls into Marti's box in front of Sam. Soon, Derek connects the two incidents to Sam and accuses Casey of secretly crushing on him.

Première diffusion : 25 septembre 2005

S1 E3 • Petite fête entre amis

Casey and Derek must persuade their parents they can be left alone for the weekend. Casey intends to have a quiet weekend at home and watch some movies with Emily, but as always Derek has conflicting plans and has a party and damages the house.

Première diffusion : 2 octobre 2005

S1 E4 • Halte à la saleté

Living-room redecorating creates strife within the family, as Casey, Lizzie, and Nora want to add a feminine touch to the household, while Derek, Edwin, Marti, and George are perfectly fine with the way the household is.

Première diffusion : 16 octobre 2005

S1 E5 • Retournement de situation

Casey discovers she has a reputation as a grade-grubber and wants to rid herself of it by choosing a slacker to work with on a group assignment – like Derek. Derek is on the brink of failing English and wants to pick someone smart to work with on the same group assignment – like Casey.

Première diffusion : 23 octobre 2005

S1 E6 • Le mariage de tante Fiona

Casey and Derek volunteer to organize Casey's aunt's wedding reception, but Casey's cousin, Vicki, is threatening to blow the entire thing apart because her mom didn't even ask her how she felt about the marriage.

Première diffusion : 30 octobre 2005

S1 E7 • La varicelle

Derek is quarantined at home as he is with the chicken pox, and is hiding a secret which Casey intends to find out. George has to prevent himself from getting the chicken pox Derek has, as he has a job presentation.

Première diffusion : 6 novembre 2005

S1 E8 • Qui perd gagne

The McDonalds and the Venturis kids (Casey and Lizzie vs Derek, Edwin, Marti) decide that the best places in the house aren't big enough for the two families, so they agree to decide by games of chance (dice, cards, etc).

Première diffusion : 13 novembre 2005

S1 E9 • Derek baby-sitter

Derek sabotages Marti when he babysits her in an attempt to impress a girl.

Première diffusion : 4 décembre 2005

S1 E10 • Une blessure bien pratique

After a clumsy mishap, Casey sprains her ankle and blackmails Derek into giving her whatever she wants. But when she gets his concert tickets, Derek wants revenge, so he comes up with a plot to get Casey to hurt him so he can blackmail her. Both turn out to be in vain when Marti decides to make a "picture" with the tickets.

Première diffusion : 11 décembre 2005

S1 E11 • Babe Raider

Casey notices Derek, Edwin, and Sam playing a sexist video game (Babe Raider) and immediately launches a campaign against the sexist attitudes in the house.

Première diffusion : 18 décembre 2005

S1 E12 • La théorie du chaos

Chaos strikes the household. Derek dyes the white clothes pink, uses the neighbor's pool and stomps on their flowers, Marti makes "potions" with Casey's perfume and shampoo and hits the neighbor's son. Nora schedules a book club at the house, which she forgets to tell George about, and the family tries some last minute cleaning to look organized.

Première diffusion : 15 janvier 2006

S1 E13 • Le code masculin

Casey likes Derek's best friend, Sam, who has feelings for Casey too. Derek is opposed to a relationship between his best friend and his stepsister so he tries to sabotage the possibility of them coming together by informing Sam of the "Male Code", which says a guy's best friends cannot date their friends siblings (or step-siblings). Derek tries to break Casey and Sam apart but fails to do so.

Première diffusion : 22 janvier 2006