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Life With Derek is a Canadian television sitcom that aired on Family (English) and VRAK.TV (French) in Canada and on Disney Channel in the United States. The series premiered on Family on September 18, 2005, and ran for four seasons, ending its run on March 25, 2009. The series starred Michael Seater and Ashley Leggat as the two oldest children in a stepfamily. It ended with 70 episodes and one spin-off television film, entitled Vacation with Derek.

Series overview

Season Episodes Originally aired (U.S. dates)
Season premiere Season finale
1 13 September 18, 2005 January 22, 2006
2 13 July 1, 2006 December 15, 2006
3 26 May 11, 2007 July 5, 2008
4 18 July 19, 2008 March 25, 2009

Season 1: (2005-06)

No. Ep. Episode title Original Air Date Prod. Code
1 1 "The Room" September 18, 2005 101
Casey is forced to share a room with her little sister Lizzie, prompting her to demand Derek's room as compensation for giving up her old life.
2 2 "The Fall" September 25, 2005 103
Casey humiliates herself by falling onto her new classmates - in full view of the boy she has a crush on, and her clumsiness earns her the nickname Klutzilla.
3 3 "The Party" October 2, 2005 104
When Casey and Derek's parents decide to go away for the weekend, Casey and Derek must convince their parents that they can be trusted to take care of everything without a babysitter.
4 4 "Puppy Dog Tails" October 16, 2005 107
Tired of the male-dominated atmosphere in the house, Casey suggests adding a few feminine touches to the living room. However, the changes result in an argument between Nora and George, so Derek helps her put things right.
5 5 "Grade-Point: Average" October 23, 2005 109
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.
6 6 "The Wedding" October 30, 2005 111
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.
7 7 "The Poxfather" November 6, 2005 112
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.
8 8 "House of Games" November 13, 2005 102
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).
9 9 "Marti the Monster" December 4, 2005 106
With a scheduled Saturday trip to the theater coming up, George and Nora need someone to watch Marti. They turn to Casey who says no because she feels the only reason that they're asking her is because she's a girl. After Derek strikes out with the new girl at school, he uses Marti to impress her.
10 10 "Sweet Misery" December 11, 2005 108
When Derek flips the TV remote at Casey, causing her to hurt her ankle, Casey decides to return the favor and make Derek really suffer.
11 11 "Babe Raider" December 18, 2005 110
Offended by the video game Babe Raider, Casey decides to counter the sexist male attitude in the house by coming up with a set of feminist house rules.
12 12 "All Systems No Go" January 15, 2006 105
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.
13 13 "Male Code Blue" January 22, 2006 113
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.

Season 2: (2006)

No. Ep. Episode title Original Air Date Prod. Code
14 1 "Date with Derek" July 1, 2006 201
When Derek asks Casey's best friend, Emily, out for a date, Casey has to wonder: Is he really interested in Emily, or is this some kind of revenge for "stealing" Sam?
15 2 "He Shoots, She Scores" July 29, 2006 203
Derek is told to coach Lizzie in hockey. Casey gets jealous of Derek's relationship with her little sister so she agrees to coach Edwin in the art of attracting the team captain.
16 3 "Middle Manic" September 22, 2006 202
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.
17 4 "The Venturian Candidate" September 29, 2006 204
Casey has some great ideas to improve the school so she decides to run for school president. But, when Emily advises her to keep in mind the risk of destroying her reputation, Casey decides to enlist Derek to run for her, since he is popular.
18 5 "Battle of the Bands" October 6, 2006 206
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 longs to join the band himself.
19 6 "Lies My Brother Told Me" October 13, 2006 205
Casey takes Derek's advice and lies when she 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 7 "Crushin' the Coach" October 20, 2006 210
Lizzie's soccer coach asks Casey out which creates a problem for Lizzie because she has a crush on him herself.
21 8 "Prank Wars" October 27, 2006 207
Casey removes all of the furniture from new headmaster Lassiter's office and pins the caper on Derek to take revenge on him for targeting her with a series of pranks.
22 9 "Freaked Out Friday" November 3, 2006 208
While Casey is freaking out about her upcoming dance competition and Derek is freaking out about his upcoming hockey playoffs, Lizzie and Edwin decide they're sick of being the middle-kids.
23 10 "The Bet" November 17, 2006 211
Derek bets Casey that she's too much of a goody goody to go out with cool-guy Trevor. Casey desperately wants to win the bet, and changes her image completely in order to attract Trevor.
24 11 "Mice and Men" December 1, 2006 212
When Derek starts to have a crush on a girl named Kendra (Casey's new study partner), Casey tricks him into changing his laid-back image into a more mature person because he wiped out Casey's report on the computer. While George, Edwin, and Derek are afraid of the mice living in their house they try to kill them, but Lizzie won't allow it and makes the mice her new pets.
25 12 "Dinner Guest" December 8, 2006 209
Casey invites her father to dinner so he can meet the rest of the new family. The dinner is a fiasco: the food Casey prepares is terrible and even worse, her father and Derek get along really well.
26 13 "The Dating Game" December 15, 2006 213
When Casey bemoans her single status Kendra offers to play matchmaker...with disastrous results. Derek gets to throw another party, except that's a disaster too when George and Nora decide to join in.

Season 3: (2007-08)

Series # Season # Episode title Original Air Date Prod. Code
27 1 "Two-Timing Derek" May 11, 2007 301
Casey asks Emily to dig up information on whether Max is available or not. Meanwhile, Nora has set up a dinner with another family, but some members of her family object.
28 2 "It's Our Party" May 18, 2007 302
George and Nora plan a joint party for Lizzie and Edwin's 'birthday'; Nora and George were partied from their wedding for Lizzie's birthday and Edwin's birthday was three months away. Lizzie wants everyone to accept her and guy friend Jamie as just friends. Casey has a date with Max after his football game, and foolishly goes to Derek for information about football.
29 3 "Misadventures in Babysitting" May 31, 2007 304
Casey and Derek turn out to be the world's worst babysitters, so Edwin invites his friend, troublemaker, Teddy over to stir up some trouble, such as tying Derek to his chair, tickling his feet, and forcing him to eat broccoli. Casey sees Max, with his ex-girlfriend Amy and assumes they are getting back together.
30 4 "Slacker Mom" June 23, 2007 305
Nora decides to quit her job for a while to spend more time with her family who she assumes she's been neglecting. Derek is happy because he treats Nora with little respect, like a maid. But when she turns up at their school wanting to host the school funfair, things get a little out of hand for Casey, because she has recently gotten a cool status from her boyfriend, and her mom is risking it.
31 5 "Power Failure" July 7, 2007 307
Casey is shocked when Derek is selected to be a prefect at school and sets out to prove he's not the man for the job; Edwin and Lizzie are jealous that Marti always gets her way.
32 6 "Don't Take a Tip From Me" July 21, 2007 310
Casey and Derek both land jobs at the same restaurant, and things don't go quite as Casey expected.
33 7 "The Bully Brothers" July 28, 2007 306
When Edwin gets picked on by a bully, he goes to Derek for advice, inadvertently causing Derek big trouble of his own, by Edwin's bully's older brother, who had bullied Derek when they were young.
34 8 "Home Movies" August 5, 2007 315
Casey gets picked to make a movie about whatever she wants it to be and she chooses her family as her topic, but she only wants to capture those sweet and memorable times she has with her family not the daily Derek Pranks and her family being who they are everyday. She writes a script so her family can go along with but everyone ends up getting frustrated and annoyed. What if she can't get her movie finished in time? Will a certain someone have to help?
35 9 "Show-Off-Tune" August 11, 2007 322
Casey signs up for a musical but she also realizes that Derek is in the chorus by himself... for the girls. She also has to work with a boy named Noel, since he is the main male role of the play, but she found out that he only did the play because of a bet, thus she gets angry. She also finds out that her boyfriend doesn't want to watch her perform! Could this be the end of Casey and Max? Will Noel make a move?
36 10 "Summer School Blues" August 26, 2007 314
Derek is forced to attend summer school but sneaks out and injects some fun into Casey's dull camp curriculum; Edwin and Lizzie set up a lucrative pet-sitting business.
37 11 "Grade a Cheater" September 11, 2007 316
Derek switches test papers with Casey, and then lures her into a scheme that will keep them both out of trouble; Edwin, Lizzie, and Marti feel that they are doing too many chores for the amount of allowance they are getting.
38 12 "Adios Derek" September 25, 2007 308
George and Abby (Derek, Edwin, and Marti's real mom) are dismayed Derek is failing Spanish and decide he should live with Abby in Spain for six months.
39 13 "Fright Night" October 15, 2007 311
Casey lectures Derek and Edwin for watching scary movies – of which she finds silly and fake – then changes her opinion when she gets scared herself.
40 14 "Sixteen Sparkplugs" November 5, 2007 309
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.
41 15 "When Derek Met Sally" November 26, 2007 312
Derek swears off girls until he meets Sally, the attractive new waitress at Smelly Nellie's. Lizzie is freaked out when her best friend Jamie tells her he likes her.
42 16 "A Very Derekus Christmas" December 3, 2007 326
When Christmas plans go awry, Aunt Madge encourages Derek to help restore the family's holiday spirit.
43 17 "Ivanwho?" January 7, 2008 317
Casey expects her new boyfriend Max to be as charming as the hero in her book, but does he have it in him?
44 18 "Rumor Mill" February 11, 2008 303
Casey's joke about Emily breaking up with Sheldon backfires when he decides to break up with Emily first. Kendra asks Casey's boyfriend, Max to the Valentine's Day dance after Derek breaks up with her.
45 19 "Derek Un-Done" March 3, 2008 318
Confused by mixed signals, Derek thinks that he may have a chance with Sally, while Casey becomes certain that Max is going to dump her
46 20 "Not So Sweet Sixteen" April 7, 2008 319
Casey's 16th birthday is coming up, and she is planning a sophisticated dinner with her friends, but Derek has other ideas and all plans go horribly wrong with an unexpected trip to the hospital.
47 21 "Driving Lessons" April 19, 2008 320
Casey is thrilled to get her driver's license before Derek, until she gets stuck playing chauffeur to her younger siblings. Derek fails his driving test for the 5th time. George crashes into a policeman's parked car. They find out George hasn't paid a lot of his tickets so he gets his license suspended. Casey then teaches Derek and George how to drive.
48 22 "Make No Prom-ises" May 19, 2008 313
Casey's dream of a romantic prom night turns into a nightmare when Derek accidentally ruins her dress.
49 23 "Cheerleader Casey" June 2, 2008 321
Casey tries out for the cheerleading squad much to Max's dismay and to the fact that Max's jealous ex-girlfriend is the head cheerleader.
50 24 "Allergy Season" June 16, 2008 323
Casey develops a mysterious allergic reaction after Max gives her his football jacket. George gets fed up with Derek's jokes and makes a deal with Derek that if he can be nice for one week, he won't have to pay for the insults he said. After the homecoming game, Casey breaks up with Max.
51 25 "Things That Go Bump in the Night" June 29, 2008 324
Grounded for the weekend for fighting again, Casey and Derek try to sneak out to go to a party, but they end up putting a dent on George's car.
52 26 "Derek's School of Dating" July 5, 2008 325
Derek tells Edwin to follow his advice which is to play it cool as he is doing to Sally.


Season 4: (2008-09)

Series # Season # Episode title Original Air Date Prod. Code
53 1 "Two Kisses, One Party" July 19, 2008 401
Casey tries to get back together with a reluctant Max, and Derek refuses to help out with Marti's birthday celebrations.
54 2 "Open Mic Plight" July 27, 2008 402
Derek struggles to tell Sally how he feels about her, so she suggests he writes a love song for her. Edwin tries out his talent show comedy routine on Lizzie and George.
55 3 "Just Friends" August 12, 2008 403
Derek becomes jealous when Sally and her ex-boyfriend Patrick start spending more time together. Derek claims that people of the opposite gender cannot be friends with each other. Edwin is suspicious that George and a close friend of his are having an extramarital affair.
56 4 "March Break" August 26, 2008 404
Casey and Derek decide to stay behind when their family goes away for Spring Break, but when their plans do not pan out, the pair are forced to spend all their time together.
57 5 "" September 12, 2008 406
Casey is upset when a new kid named Truman French at school starts rating girls and only gives her a 6½ out of 10.
58 6 "Derek Denies Denial" September 23, 2008 407
Derek breaks up with Sally after she announces her plans to attend an out-of-province university in the fall. Derek claims he's fine with the breakup, but Casey and Edwin don't believe him. Meanwhile, Lizzie and Marti try to keep a dog hidden from the family,
59 7 "Happy New Schoolyear" October 7, 2008 411
After an offhand comment from Casey, Derek decides to drop out of 12th grade and follow Sally to Vancouver. As the new school year begins, Lizzie decides to change her looks, while Casey changes her room. Meanwhile, Marti is hiding in her tent and Edwin is upset about being broken up with Michelle.
60 8 "No Secrets" October 21, 2008 408
Casey panics when her diary containing details of her dreams about Truman goes missing, so Lizzie and Marti make Derek and Edwin's lives a misery, believing they took it.
61 9 "Take a Stepkid to Work Day" November 4, 2008 405
Casey spends the day with George at his law office but causes confusion by reorganising everything, while Derek tries to help Nora land a business deal.
62 10 "No More Games" November 18, 2008 414
Casey gets stuck with Truman as her fencing partner, and an innocent game of table tennis turns into a high-stakes competition as Derek and Edwin vie for the title of best player.
63 11 "How I Met Your Stepbrother" December 2, 2008 410
Nora persuades Casey to tell the story of how she and Derek met as George organises a Mexican fiesta for their second wedding anniversary.
64 12 "Casey & Ralph?!" December 16, 2008 412
Ralph stays at Derek's house while his parents are away for the weekend. While there, he develops a crush on Casey.
65 13 "Tuesday Afternoon Fever" December 30, 2008 413
Casey enters a TV dance contest in order to pursue her life-long dream of dancing. Derek enters to mock Casey but is praised for his style and the two of them make it to the finals. When Derek's partner, Sadia Sullivan finds out he doesn't know how to dance she takes Casey's partner which devastates Casey. The rest of the family give Derek the silent treatment for hurting Casey and ruining her dream. Derek finally resorts to being Casey's partner. Also, Lizzie dares junk food addicts George and Edwin to eat only healthy food for a week and to exercise regularly, otherwise they'll get their hair dyed purple.
66 14 "Teddy's Back" March 4, 2009 415
A surprise visit from Edwin's friend Teddy turns into a frequent event, much to the discomfort of the McDonald-Venturi family, and Casey goes on a date with Truman.
67 15 "Rude Awakenings" March 11, 2009 409
When midterms and report cards are around the corner, Casey is worried about her future, and Derek is slacking off. When Nora and Lizzie realize that Casey is stressed out, they try to relax her. At the same time, Derek tries to raise his grades so he won't fail. Neither of the family's attempts to destress Casey, or to improve Derek's grades are working, so Casey and Derek come up with a plan to get good grades.
68 16 "Truman's Last Chance" March 18, 2009 416
Casey attends a party in Toronto with Truman, but Derek serves as her chaperone, while Lizzie goes on a date with a boy her family has never met.
69 17 "Surprise" March 25, 2009 417
The prom is coming up and Casey and Emily are dateless. Truman wants to take Casey, but she won't speak to him due to an incident during the last episode. Derek wants to take Emily but she's already made plans with Casey to go to the prom together. Meanwhile, Nora and George reveal that they are going to have a baby.
70 18 "Futuritis" March 25, 2009 418
As graduation day approaches, a worried Casey is having difficulty writing her valedictorian speech, which she blames on her fear of Derek pulling a prank and ruining it until Derek points out that she's actually afraid of what the future holds. Meanwhile, Edwin is concerned that he won't be able to live up to Derek's reputation at J.S. Thompson High when he goes there in the fall. The family celebrates Casey and Derek's high school graduation and the two make a very awkward announcement: that they are going to the same university.

Note: This is the series finale.

Film

Episode title Original Air Date
"Vacation With Derek" June 25, 2010
Casey and Derek are back and continue their sibling rivalry during a family vacation to visit their grandmother, Felicia at her beautiful lakefront lodge. Things heat up with Casey when she meets Jesse, a young dancer who happens to be a waiter at the lodge. Meanwhile, as Derek is "chilling" on his vacation, he falls for Roxy, the rich girl who lives across the lake. But when Roxy’s father, a greedy land developer, threatens to destroy the natural beauty around them, the McDonald-Venturi kids bond together to save the lake and the lodge, with a little legal help from George and Nora who are having a baby too.

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