Dexter, a boy-genius with a secret laboratory, constantly battles his sister Dee Dee, who always gains access despite his best efforts to keep her out, as well as his arch-rival and neighbor, Mandark.
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see all options Availability data: JustWatch
- Seasons
- 4
- Episodes aired
- 220
- Latest aired
- S04E36
- Total runtime
- 1d 3h
Timeline when each season aired
- Season 1 April 1996 – January 1997 38 episodes
- Season 2 July 1997 – June 1998 108 episodes
- the show was away for 3 years and 5 months
- Season 3 November 2001 – September 2002 36 episodes
- Season 4 November 2002 – November 2003 38 episodes
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S04E01 Beau Tie
November 22 · 7min find the promo
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Dee-Dee has a new boyfriend who also likes science and Einstein, and soon the boy finds himself caught in a vicious tug of war...
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S04E02 Remember Me?
November 22 · 7min find the promo
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Dexter is hit by a wrench while working on a device, and suffers amnesia, Dee Dee decides to mess with his head
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S04E03 Overlabbing
November 22 · 7min find the promo
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Dexter and Mandark drill underground to expand their labs, but end up overlapping each other's work. They secretly devise a plan to destroy each other.
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S04E04 Sis-Tem Error
April 25 · 7min find the promo
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Dee Dee accidentally breaks down Dexter's lab, and she tries to not and let him know its broken.
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S04E05 Bad Cable Manners
April 25 · 7min find the promo
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Dad wants cable really bad, so Dexter illegally pirates cable for him.
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S04E06 Dexter's Library
April 25 · 7min find the promo
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When Dexter becomes the head of a library, he inforces the rules really hard, driving everyone crazy.
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S04E07 The Scrying Game
May 2 · 7min find the promo
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Dee Dee learns a new game that can ""predict peoples futures"". She uses it on Dexter, and finds out that the game REALLY DOES predict peoples futures...
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S04E08 Monstrosi-Dee Dee
May 2 · 7min find the promo
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A Monster starts roaming Dexter's lab, although Dexter doesnt know its just Dee Dee, who ate an apple in a failed lab experiment.
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S04E09 Dad Man Walking
May 2 · 7min find the promo
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Dexte'rs father begins to sleepwalk, and accidently stumbles into Dexter's Lab
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S04E10 Dexter's Little Dilemma
May 9 · 7min find the promo
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Dexter accidentally shrinks his parents, and puts them into a model of there house. Although the house isnt completed, so Dexter must find a way to reverse it before they know the truth.
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S04E11 Faux Chapeau
May 9 · 7min find the promo
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Dexter creates a new invention and wears it on his head. It suddenly becomes the latest fashion craze at Huber elementry.
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S04E12 D²
May 9 · 7min find the promo
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Dexter and Dee Dee realise when they work together, they make a pretty good team.
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S04E13 Head Band
May 16 · 7min find the promo
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Dee Dee has a song stuck in her head. Literally.
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S04E14 Stuffed Animal House
May 16 · 7min find the promo
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Dee Dee's stuffed animals come to life and roam the house. Dee Dee and Dexter must get them before Mom and Dad find out.
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S04E15 Used Ink
May 16 · 7min find the promo
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Dexter creates an ink in which lets him command them to do whatever he wants them to do. Although when Mandark gets a hold of it, Dexter is the one being the slave.
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S04E16 School Girl Crushed
May 23 · 7min find the promo
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Decxter and Mandark are both outperformed by a new girl attending the school, jealous, they become allies to deal with her.
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S04E17 Chess Mom
May 23 · 7min find the promo
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Mom thinks she should spend quality time and watch Dexter in his chess comatition. Although, she really embarasses Dexter while hes there...
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S04E18 Father Knows Least
May 23 · 7min find the promo
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Dad gets fired from his job, and has to do the same job Mom does. He realises it isnt as easy as it looks.
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S04E19 Dexter the Barbarian
May 30 · 7min find the promo
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Dexter goes on a quest. His quest is to reach the bathroom before he explodes.
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S04E20 Tuber Time
May 30 · 7min find the promo
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When Dexter realises the power of the potato, he redesigns his lab to work on it.
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S04E21 Sore Eyes
May 30 · 7min find the promo
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Dexter is tired of wearing glasses, so he uses laser surgery on his eyes to make him have 1/20 vision. Although, he learns than no human should be able to see THIS well...
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S04E22 Babe Sitter
September 5 · 7min find the promo
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Dee Dee goes over to Mandark's house to baby sit him, and Mandark likes that idea.
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S04E23 Mountain Mandark
September 5 · 7min find the promo
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Mandark drops technology and starts being more in touch with nature.
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S04E24 2Geniuses 2Gether 4Ever
September 5 · 7min find the promo
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Dexter decides its better if him and Mandark work together, although in the end Dexter does all the work while Mandark does nothing
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S04E25 Height Unseen
September 12 · 7min find the promo
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Dexter is tired of being short, since his old plan of growing himself didnt work, he decides to make everyone shorter than him.
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S04E26 Bygone Errors
September 12 · 7min find the promo
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This takes place in the future, where Old Man Dexter tells about his ""glory days"". And Old lady Dee Dee keeps on adding her opinions as well...
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S04E27 Folly Calls
September 12 · 7min find the promo
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When Dee Dee accidentally chops off her pigtail, Dexter gives her some hair growth potion. Although when she uses it, her hair floods the entire house.
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S04E28 Voice Over
September 19 · 7min find the promo
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When Dexter's Computer gets Laryngitus, Dexter must find a replacement voice for her.
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S04E29 The Blonde Leading the Blonde
September 19 · 7min find the promo
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Dexter refuses to see that blonde's have more fun, so he dyes Dee Dee's hair to prove it.
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S04E30 Comic Stripper
September 19 · 7min find the promo
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Dexter finds out that all of Mandark's plans are taken from a comic book. This way, he can get ready.
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S04E31 Tee Party
September 26 · 11min find the promo
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Dexter and his dad enter a Golf tournament, with Dad eager to get his hands on the Trophy, but there is one problem: he is hopeless at Golf, so Dexter decides to help with a remote controlled Golf ball
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S04E32 Dexter's Wacky Races
September 26 · 11min find the promo
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Dexter, Monkey, The Justice Freinds, Dee-Dee, her imaginary freind Coosie, Mandark, his parents, and Dexter's Parents participate in a cross-country race
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S04E33 The Lab of Tomorrow
November 4 · 6min find the promo
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Monkey narrates a documentry of the future of Laboratories and sciences.
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S04E34 Chicken Scratch
November 4 · 6min find the promo
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Dexter catches the chicken pox, and Dee Dee tells him a ridiculous tale that if he keeps scratching them, he will turn into an evil chicken. His nonstop scratching eventually does just that.
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S04E35 Garage Sale
November 4 · 10min find the promo
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Dexters parents accidentally sell Dexter's latest invention, and it is bought by Mandark.
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S04E36 They Got Chops
November 20 · 7min find the promo
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Dee Dee starts layin' down the Judo on Dexter, then Dexter learns how to fight back.
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S04E37 Poetic Injustice
November 20 · 7min find the promo
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Dexter falls in love with a new girl at his school, but decides to impress her with poetry rather than science.
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S04E38 Comedy of Feathers
November 20 · 7min find the promo
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When Dee Dee sees an Ostrage at the Zoo, she wants one of her own as a pet.