Season 1, Episode 1: The Room18 September 2005
Casey finds her room in the new house too small to live in so she manifests her dissatisfaction with the parents. It turns out in a battle between the two "step" siblings to determine who will have Derek's room.
Season 1, Episode 2: The Fall25 September 2005
Derek manages to insult his new step-sister, making Casey clumsily fall down at school and earn the nickname Klutzilla. And it just keeps getting worse as Casey continues her klutz streak. Finally Derek realizes something, besides his rude behavior, that might be making Casey fall and decides that helping her reputation will help his, as it's bound to get out that they are newly step-sibs.
Season 1, Episode 3: The Party2 October 2005
Casey and Derek are left alone for the weekend, but Derek throws an outrageous party.
16 October 2005
Casey is sickened by the men of her new home. Between the smell and the disgusting habits the boys have grown to have, Casey feels like she and her family don't belong in their new house. Casey convinces her mom, Nora, to redecorate the house so it feels more at home for her and the rest of the girls. Naturally, the boys are extremely upset and the two families cause a fight between George and Nora.
23 October 2005
Casey scrounges for every grade point she can, no matter how high her grade is. When her best friend, Emily, tells Casey that grade grubbing and it's not a good thing Casey tries to lose her new rep. Derek isn't allowed to fail another grade and tries to use Casey's grub rep to get an A, while Casey is using Derek's rep to get a bad grade.
30 October 2005
Casey plays wedding planner for her aunt's wedding, having to put up with her annoying new step-brother and her equally annoying cousin. Derek gets put in charge of the wedding video.
6 November 2005
Derek gets the chicken pox which keeps him in quarantine and while he has the chicken pox he is doing something very sneaky. Casey figures it's drugs and finds our he's running a business and selling CD's and what not.She helps him out and starts helping him sell, which gets her in trouble. Meanwhile George is trying not to get sick from Derek.
13 November 2005
Casey is sick of having no room in the Venturi house and brings up the subject to Derek and the rest of their siblings. Derek, who doesn't like sharing or losing, tells Casey how they get things in his house. After handing out marbles to represent the disputed areas in the house they start challenging one another for the other marbles. Neither side plays fair, and both sides will be underestimated.
4 December 2005
Nora and George need a babysitter for an upcoming day trip and Derek ends up being left in charge of Marti who has fun terrorizing him as he tries to impress the new girl from school, Sandra.
11 December 2005
After a clumsy mishap, Casey sprains her ankle and black mails 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 black mail her. Both turn out bad and hopeless when Marti decides to make a "picture" with the tickets.
18 December 2005
After Casey is offended by Derek and Edwin playing Babe Raider (a spoof on the game Tomb Raider), she makes a manifesto stating that they can't play Babe Raider in the house. However, after furthering her research and playing the game, Casey finds that it's not such a bad game after all. Derek is mad about having to take down his posters and feels that he and Edwin are being "brainwashed".
15 January 2006
Casey seeks more organization within the MacDonald-Venturi household.
22 January 2006
Casey and Derek's best friend, Sam, like each other. When Derek gets the feeling Sam wants to ask out Casey he conveniently lets Sam know about the Male Code which states siblings are off limits and step-sibs count. George and Nora don't think they know their kids.
1 July 2006
Derek goes out with Emily to make Casey jealous; Lizzie has a dance-phobia.
29 July 2006
Sibling rivalry heats up between Derek and Casey when Casey tries to help Edwin with his girl problem and Derek is forced to help Lizzie with her hockey. Both become too wrapped up in being a better big-sib than the other and forget about the needs of the younger siblings they are trying to help.
22 September 2006
Derek couldn't care less that Casey and Sam are always breaking up and getting back together, until they break up for good and Sam's ability to play hockey goes down the tubes.
29 September 2006
Casey is disgusted with her fellow students' apathy about the upcoming school election. Sheldon Schlepper expects to be a shoe-in, until Casey convinces Derek to lend his cool factor to the process by running himself.
6 October 2006
Derek's band is so desperate for a singer that they ask Casey to join; even though she's more folk than metal and thinks they're a bunch of posers. George, remembering his rock 'n roll youth, longs to join the band himself
13 October 2006
Casey, compromising all her principles, takes Derek's advice and lies when she desperately needs an extension on a school assignment. Soon she is trapped in a web of deceit and the harder she tries to extricate herself, the worse it gets.
20 October 2006
Lizzie's soccer coach falls for Casey.
Season 2, Episode 8: Prank Wars27 October 2006
To pay Derek back for his many practical jokes, Casey pulls a huge prank of her own: stealing the office furniture from the new uptight Vice Principal. Everyone assumes Derek did it. The only two people who know he didn't are Casey and Derek.
3 November 2006
While Casey is freaking out about her upcoming dance competition and Derek is freaking out (by being annoying) about his upcoming hockey playoffs, Lizzie and Edwin decide they're sick of being the ever-accommodating middle-kids.
Season 2, Episode 10: The Bet10 November 2006
There are way to many bets stirring up at the Macdonald/Venturi household. When Derek makes a bet with Casey and she loses she is out to prove she can win and bets Derek that she can make a boy that is the opposite of her usual liking ask her out by Friday.
1 December 2006
Venturi men are afraid of mice we find out when two mice inhabit their house. Casey's English partner, Kendra, has a thing for Derek, who shares this affection and tries to change his immature ways to impress her, only to find out that she likes immature boys. Casey uses the mice to get Derek and Kendra together when she finds out Derek really likes Kendra.
7 December 2006
Casey invites her dad to dinner and tries to make it perfect. When it all goes terribly wrong and she breaks down crying in front of Derek the good guy in him comes out and he calls her dad to make things better.
15 December 2006
When Casey is dateless, Kendra offers to play matchmaker. Casey gets angry when Kendra posts misleading fliers, however is content when Kendra tells her of her cross-referencing plan. Meanwhile, this is an open chance for Derek to throw a party. When George declines the request, Derek informs him it's a party for Casey to meet the finalists Kendra prepared for Casey to choose a date from, Nora has to intervene George's second response of 'No' to make the party happen. George and Nora promise to stay upstairs, but break the promise and come down to crash the party, and they end up being cool among Derek's friends, which does not sit well with Derek. Casey is hopeless, sitting in her room. A handsome boy walks in accidentally, looking for the bathroom. He asks her if she's found what she's looking for, and Casey, lovestruck, tells this new boy Max that she thinks she has.
11 May 2007
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.
18 May 2007
George and Nora plan a joint birthday party for Lizzie and Edwin. It's a fiasco until Casey and Derek reluctantly provide emergency help.
31 May 2007
Derek turns out to be the world's worst babysitter, so Edwin invites his friend Teddy over to stir up some trouble.
23 June 2007
Casey risks losing her 'cool' status when Nora tries to recruit her new friends to help at the high school fun fair.
7 July 2007
Thinking it will look great on her university applications, Casey (Ashley Leggat) suggests that Thompson High establish a prefect program to help ensure order at the school. The principal agrees, but it's not Casey he makes a prefect it's Derek (Michael Seater). Though he's hesitant at first, Derek quickly embraces his newfound authority, and is soon doling out detentions for offenses like bringing tuna sandwiches for lunch and studying in the hall. Casey is determined to put an end to his reign of terror and sets out to prove Derek is not prefect material. When she learns that Derek and his band are planning an unauthorized rehearsal after hours in the cafeteria, she arranges for Sheldon (William Greenblatt), another prefect, to catch them in the act. But instead of busting them, Sheldon joins Derek onstage to sing with the band. Casey can't believe her plan has failed, but gets an even bigger shock when the principal shows up, strips Derek and Sheldon of their prefect badges and sentences everyone Casey included to detention. Meanwhile, Edwin (Daniel Magder) and Lizzie (Jordan Todosey) are frustrated that George (John Ralston) and Nora (Joy Tanner) always give in to Marti (Ariel Waller) because she's so cute. Edwin and Lizzie decides that they, too, can play the cute card, but meet with less success than they'd hoped.
21 July 2007
Casey and Derek both land jobs at the same restaurant, and things don't go quite as Casey expected.
28 July 2007
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.
5 August 2007
Casey tries to film a heartwarming saga of a blended family for her school project, but her family members won't cooperate.
11 August 2007
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.
26 August 2007
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.
11 September 2007
Derek switches test papers with Casey, and then lures her into a scheme that will keep them both out of trouble.
25 September 2007
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.
15 October 2007
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.
5 November 2007
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.
26 November 2007
Derek falls in love with a waitress at work. Too bad she already has a boyfriend.
3 December 2007
When Christmas plans go awry, Aunt Madge encourages Derek to help restore the family's holiday spirit.
Season 3, Episode 17: Ivanwho?7 January 2008
Idealistic Casey expects her boyfriend Max to be as chivalrous as the literary hero Ivanhoe.
11 February 2008
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.
27 November 2007
When signals get crossed, Derek thinks he has a chance with Sally, and Casey is sure Max is going to dump her.
3 December 2007
Casey's hopes for the Sweet 16 of her dreams are thwarted by an unexpected trip to the hospital.
19 April 2008
Casey is thrilled to get her driver's license before Derek, until she gets stuck playing chauffeur to her younger siblings.
7 December 2007
Casey's dream of a romantic prom night turns into a nightmare when Derek accidentally ruins her dress.
30 November 2007
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.
6 December 2007
Casey develops mysterious allergies after Max gives her his football jacket.
21 November 2007
Grounded for the weekend, Derek and Casey put a dent in George's car when they try to sneak out to a party.
5 July 2008
Derek and Edwin both strike out despite Derek's patented dating techniques.
19 July 2008
Sally is disappointed in Derek when he refuses to help out at Marti's birthday party; Casey asks Max if he wants to get back together.
27 July 2008
Derek has trouble expressing his feelings, so Sally suggests that he write her a song. Edwin is hurt when no one finds his comedy routine for the talent show funny.
12 August 2008
Casey sets out to prove Derek wrong when he claims guys and girls can't be just friends.
26 August 2008
Casey and Derek choose to stay home alone while the rest of the family goes on a road trip to Quebec City for March Break.
Season 4, Episode 5: 6 1/212 September 2008
Even though she tries not to care, Casey is crushed to learn the cute new guy, Truman, rated her a mere 6 1/2 out of 10.
23 September 2008
Sally's acceptance into the University of British Columbia nearly puts a strain on Derek's relationship with her,... and everybody else. Lizzie and Marti take care of a lost dog.
7 October 2008
All the kids are in crisis about going back to school in September, but they have to put their problems aside to stop Derek from dropping out of school to go west with Sally.
Season 4, Episode 8: No Secrets21 October 2008
When Casey's dream diary - documenting her persistent dreams about Truman - goes missing, she's convinced either Edwin or Derek have taken it.
4 November 2008
Casey spends a day at George's law office; Derek nearly loses business for Nora.
18 November 2008
On gym activity sign up day, Derek (Michael Seater) makes sure Casey (Ashley Leggat) is late for school so all the popular options are booked up. Casey ends up in fencing, with Fergus (Patrick Garrow) as her instructor, and the insufferable flirt Truman (Joe Dinicol) as her partner. Although Casey and Emily (Shadia Simmons) had made a pact to swear off dating until after the Christmas exams, Casey now wants to extend the policy for the rest of the year just to keep Truman at bay. When he accidentally gooses her with his épée, Casey hits Truman on the arm with her épée and gets kicked out of fencing by Fergus. Meanwhile, George (John Ralston) brings home a new ping pong table and Edwin (Daniel Magder) beats all his siblings in turn except Derek, who considers himself the master and keeps cheating and taunting him. On Casey's advice, Edwin decides he can't lose if he doesn't play. Counter to the advice she gave Edwin, Casey begs Fergus to let her back into the class and he agrees, but only if she embraces the grace and beauty that is fencing. After some coaching, Casey decides she is ready to take on Truman. She also tells Edwin it's time he stood up to his big brother.
2 December 2008
On her wedding anniversary, Nora tries to distract herself from George's Mexican fiesta fiasco by recalling Casey and Derek's plot to stop their parents' marriage.
16 December 2008
When Ralph decides he's in love with Casey, Derek encourages him to go for it.
30 December 2008
Derek threatens to ruin Casey's dreams of winning an important dance competition; Lizzie tries to convert junk food junkies George and Edwin.
4 March 2009
After pulling a devious prank on Derek (Michael Seater) a year before, Teddy (Cameron Ansell) is back, hanging around, and driving everyone in the McDonald Venturi household crazy. Teddy knows they want to get rid of him, but before they send him home he appeals to Derek's ego as the master prankster. The only reason he's been hanging around and the only reason he pranked Derek last year was to earn his respect. A flattered Derek makes Teddy his personal assistant and Teddy has Derek exactly where he wants him. Edwin is deeply suspicious of Teddy's motives, and not a little jealous, but Derek won't listen to him. Teddy is now ready to make his move but is he good enough to outprank the master? Meanwhile, Truman (Joe Dinicol) promises Casey (Ashley Leggat) a first date she'll never forget and she gets it: the worst date of her life. Truman claims it was a joke but she isn't amused. To make it up to her, Truman lets Casey design the perfect date. Her date, her rules, his treat he's on!
11 March 2009
With his D average, it's going to take more than supersonic cramming to get Derek into university.
18 March 2009
Now that they've been dating for a few weeks, Casey (Ashley Leggat) and Truman (Joe Dinicol) have officially reached boyfriend/girlfriend status. So when Truman announces he's going to a private school party in Toronto that weekend, Casey assumes she's invited. But Nora isn't sure how she feels about Truman and doesn't like Casey travelling two hours to a party. Even though Casey volunteers to stay with her cousin Vicki (Paula Brancati), Nora still isn't comfortable with the idea. Instead, she suggests Derek (Michael Seater) chaperone. Casey is outraged at the idea, but that's the condition. Casey's not the only McDonald girl with a date Saturday night Lizzie (Jordan Todosey) has one too and with a boy Nora's never met. Nora figures Lizzie could also use a chaperone and finds Edwin (Daniel Magder) more than happy to oblige. Though Derek had intended to spend his time in Toronto hanging with his hockey buddies, he quickly changes his plans when he meets a cute girl while dropping Casey and Vicki off at the party. Unfortunately the night is less successful for Casey, who not only learns that Vicki and Truman used to date, but catches them in a kiss. Devastated, Casey finds support from a most unlikely source: Derek. Back home at Smelly Nellie's, chaperone Edwin is giving Lizzie's date, Marvin (Landon Norris), the third degree. Lizzie is furious and Marvin is very uncomfortable. Edwin finally does the right thing and leaves before Marvin does.
Season 4, Episode 17: Surprise!25 March 2009
Prom is fast approaching, and Derek (Michael Seater) and Casey (Ashley Leggat) are scrambling to find dates. Casey had planned on going with Truman (Joe Dinicol), but isn't talking to him after what happened at the party in Toronto. And though Derek had a first, second and third choice picked out, when he finally gets around to asking, each girl has already committed to go with someone else. Casey decides prom will be more fun with a friend, and since her male pals are already spoken for, she asks Emily (Shadia Simmons) to be her date right before Derek hears that Emily is available and asks her himself. Emily tells him she can't since Casey asked first and is her best friend, though this is a hard decision after a surprise kiss reveals Derek has more than just a friend feelings for her. If he wants to take Emily to the prom, Derek's going to have to find someone else to take Casey and he thinks he knows just the person. George (John Ralston) and Nora (Joy Tanner), meanwhile, wait for an appropriate time to share a BIG secret with the family.
Season 4, Episode 18: Futuritis25 March 2009
In the series finale of Life with Derek, Casey (Ashley Leggat) has been chosen valedictorian of her graduating class, but a case of "futuritis" has left her struggling to write her speech, which is supposed to celebrate the future. She has received a scholarship to Queens University in Kingston but is having second thoughts about moving so far away from her family. Derek (Michael Seater) claims not to be worried about anything he's planning to go to Europe the following year whether he gets into university or not. But he's having trouble convincing everyone including the principal, his girlfriend and his own father that he's not planning a prank for the graduation ceremony. Meanwhile, Edwin (Daniel Magder) is nervous about starting high school in the fall, worried that he won't live up to Derek's legendary reputation. After a discussion with his brother, he decides if he's going to make a name for himself at Thompson High, he'll have to pull off something big and fast! A prank at Casey and Derek's graduation ceremony could be just the ticket. The morning of the ceremony Casey has been up all night writing and rewriting her speech, and Derek is nowhere to be seen. Will Casey realize she has to speak from the heart? And is Derek really going to leave Edwin to carry on the 'prankster' torch alone?
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