Malcolm struggles with his speech when he's elected valedictorian of..
For the senior prom, Reese gets paid to take Janine, a studious girl..
Reese meets a cute vegetarian named Carrie (Tara Lipinski) when he g..
When Stevie goes to the hospital, Malcolm tries making up every excu..
Malcolm joins a local dance class to impress a girl, but when she lo..
Hal's friend Trey tells him to come to his dental office when he los..
When four popular high school girls play an evil prank on Reese by p..
Lois and Hal visit Francis to help him celebrate one year of sobriet..
Hal gets a devastating phone call that his father has died, but beca..
Lois discovers she has mono after a visit to the doctor. She then en..
A broke Francis gets talked into getting a real job by Dewey. Back h..
Dewey, Lois and Hal go out of town to a piano competition; and witho..
Malcolm begins to fuss about his high school yearbook photo. Malcolm..
Malcolm and Reese end up in the same class since Reese failed the pr..
Reese's old army buddy, Abby (Larisa Oleynik) visits and she has fee..
A power outage disrupts Lois and Hal's anniversary and reveals Malco..
Malcolm's in love with a hot and secretly brainy teen named Vicki (S..
Jessica moves in on a temporary basis and teaches Malcolm how to man..
Hal begins suffering from insomnia after hearing that they purchased..
An angry Reese threatens Stevie, who dreads a retaliation; Dewey get..
Hal finds out that the family has been without health insurance for ..
Malcolm and Reese's attempt to hitch their way to the annual festiv..
The boys place Lois in the Mrs. Tri-County Beauty Pageant. Hal tries..
The Buseys, without Dewey, hold their teacher hostage.
Lois forces Malcolm to hand out flyers on stilts at the Lucky Aide, ..
Hal handles a motivational seminar.
Lois & Ida have to prepare for traditional festivities.
Reese raises caterpillars. Malcolm works the graveyard shift with Lo..
Francis asks Hal to complete a promise he made to him as a child, bu..
Dewey's friend, Chad (Cameron Monaghan), visits, and shows that he i..
An accident makes Ida one-legged. Dewey wants to make a memorial out..
When Hal and Lois discover that they barely have any time to talk to..
A neighbor gives Hal power of attorney and he is forced to choose wh..
After being moved to tears by watching an opera, Dewey tries to make..
A questionable billboard is put up. Malcolm, Reese and Dewey try to ..
Malcolm has his ups and downs with a used Plymouth Barracuda.
Jamie battles Lois with devilish wiles that weaken her will to make ..
Hal, after remembering previous anniversary blunders while trying to..
The family's broke and the boys are dispirited but Hal is determined..
Kitty (Merrin Dungey) returns after having done everything imaginabl..
Hal goes into war with his neighbor for the Decor crown. Hal strikes..
Hal dumps a cat habitat with the garbage and inadvertently picks a f..
After learning that Dewey will be leaving their class, the Buseys ru..
Reese ditches the army in Afghanistan.
The company uses Hal as a scapegoat, while Reese becomes a top-class..
The house goes crazy as Hal is falsely charged in a crime involving ..
When Lois tracks down her father's "other family," she meets Victor'..
When Dewey's annual candy selling event for school comes up, he uses..
Malcolm convinces Dewey to do poorly on an I.Q. test, so that he won..
Hal sets up Abe Kenarben on a blind date with Jaime's babysitter Pol..
Lois tags along with Malcolm as he visits a college, but she's deter..
Francis is determined to show his parents why they should not have k..
Lois blows her top over a hidden 15 percent ser charge in the bill a..
Lois' younger sister, Susan (Laurie Metcalf), pays the family a visi..
Malcolm is convinced to play softball by Lois and ends up doing very..
Ida announces she's getting married at the same time Malcolm gets hi..
Polly requests Malcolm's help in order to get her father ashes back,..
Malcolm alerts the A.C.L.U. when he encounters censorship working on..
Malcolm and his family come home early from their vacation find that..
Hal and the boys begin selling Christmas trees, but every time that ..
Malcolm gets a job working for Lois on the drugstore loading dock bu..
Mr. Herkabe tells Malcolm that his next project is about filming his..
Malcolm decides to skip to go to a party, but things turn out diffe..
When everyone finds out that Kitty and Abe are divorced, they decide..
Hal and the boys offer to watch baby Jamie so an exhausted Lois can ..
When Dewey's pet rabbit does well in a state contest, the family mus..
Now that the fifth child has arrived, Lois and Hal must find a way f..
While Lois is in labor, the house is hectic, and Hal, desperate to g..
Hal and the boys are at a bridal expo, leaving a very pregnant Lois ..
Leonard (Jason Alexander), a cynical, genius chess player with no fr..
When Hal and Lois go out of town for a "last chance" getaway before ..
Clips from past episodes are interwoven with the current squabbling ..
An academic competition faces the Krelboynes in an event Malcolm der..
A garage sale that's entrusted to Reese (yikes!) yields treasures ne..
Malcolm tries to emancipate Dabney from his overbearing mother while..
The boys are being babysat by a 16-year-old girl, Jessica, who the b..
After Lois is out of town, Malcolm and Hal got into a fight leading ..
Lois knows that Malcolm is Nicki's boyfriend, so Lois gives Malcolm ..
After being rattled by a battle among the boys, a pregnant Lois pond..
Cloris Leachman returns in her Emmy-nominated role as the spiteful a..
Hal and the boys (with Lois noticeably missing) go to Francis's dude..
After joining the basketball team at school, Malcolm soon finds hims..
Malcolm goes out to teach a girl trigonometry, but ends up falling i..
Brotherly love is lost on Malcolm and Reese, now out to sabotage his..
Malcolm gets attracted by another girl, Alison, and Malcolm discover..
Christopher Lloyd adds to his gallery of eccentric characters, playi..
Malcolm tries to get popularity now that he is at a new school, but ..
Malcolm, whose frenetic home life is a kind of zoo, begins the fourt..
Krelboynes are forced to go back to the general school population, w..
Lois gets jury duty and Hal tries to figure out what case she's work..
An embattled psychiatrist probes the boys' naughty behavior patterns..
When two sexy girls come to the boys' house, they find their opportu..
After a dog follows Dewey to his home, he decides to hide it in the ..
Hal decides to make himself Dewey's new coach, but that brings troub..
Francis arrives in time for Hal's birthday, along with his new wife,..
Cynthia finally returns, but now in a very bad and angry manner. Whe..
Reese finally gets the opportunity to drive, while being in his driv..
Hal must fake that he is a man that he is not, and in the end that e..
Juicy guest casting and ingenious plotting enliven an hourlong episo..
Lois gets a makeover that instantly makes other employees look at he..
Richie manages to get a job for Reese in a burger place, but when 00..
Hal is invited by Abe to go to play poker, but he is embarrassed wit..
When Malcolm and his brothers destroy their tree ornaments, Lois pu..
When Hal's doctor discovers something suspicious during his routine ..
In an effort to contribute to society and to make her boys useful at..
Malcolm has a new light in his life: a perky classmate named Sara (w..
Lois goes to a book club to talk about a book, but later discovers t..
Still reeling over Francis' break for freedom, Lois and Hal find the..
It's still summer-vacation time on the jaunty third-season opener, w..
During a pregnancy scare, Hal and Lois look back at the eventful bir..
Malcolm's family and scores of others are forced to relocate to a sc..
Malcolm, Reese, Dewey, and Stevie decide to do a trick on their pare..
Malcolm, Dewey, and Reese find an old mini-bike that they quickly fi..
Malcolm and Reese are forced to be Francis' servants after he has an..
An episode in which we see two different storylines, where we see wh..
Malcolm tries to help Reese get better grades in order to prevent hi..
Hal forces Reese to cook to make him stay out of trouble, as Hal and..
Malcolm complains about a stomachache and Lois takes him to the hosp..
When Lois refuses to give a cop a free ice tea, she is sure that he ..
Lois's nightmare parents, Victor and Ida, come for a surprise visit ..
Malcolm becomes concerned with his future and his career. He takes a..
Malcolm's family tries to become friendly with their new neighbours ..
There's a new girl in the Krelboyne class. Malcolm learns that his d..
After Malcolm breaks the arm of an old woman, he must turn into her ..
Reese is suddenly the school hero when he joins the wrestling team, ..
Malcolm gets a role in the high school play and is so captivated by ..
Malcolm begins taking therapy, as he is being humiliated in his Krel..
Lois and Craig get in trouble when armed-robbers come to the Lucky A..
Hal and Lois go to a convention, where Hal gets into a fight that st..
The family goes out to a weekend vacation to an old indian casino, w..
Trouble comes when the Kenarbans invite the entire family to dinner ..
When Lois gives the boys 0 each to buy her a present (and she evens ..
The boys are disappointed that Francis did not make it for Halloween..
Hal, Loi, Malcolm and Reese are trapped in a horrendous traffic jam...
The family go out to a water park, where a battle between siblings a..
The boys stay home from school when their mother thinks it's Sunday ..
Malcolm and his Krelboyne classmates enlist the help of Hal for a sc..
Malcolm is angry because during a game of street hockey, he sprints ..
Reese becomes so head-over-heels for a girl on the cheerleading squa..
The family gets ready to attend a relative's funeral, which affects ..
Malcolm is upset about having to dance in front of the school with t..
After the kids blow up the store's steam cleaner, and Dewey confesse..
Disasters abound at a gifted kids' picnic, where stage acts bomb, fa..
Francis goes AWOL from military school and comes home to get togethe..
Malcolm sleeps over at Stevie's house and, appalled at his over-prot..
Malcolm's cushy babysitting job provides relief from the trailer the..
Parallel stories pit Malcolm against Kevin, a bullying, obnoxious ne..
Lois and Hal are spending the weekend at a family wedding, leaving F..
A battle of wits and wills ensues between the boys and their angry m..
Perhaps the most original sitcom pilot in recent years, this first e..