Malcolm struggles with his speech when he’s elected valedictorian of his graduating class at school. However, Lois refuses to listen to any of his complaints and reveals that she wants…

When Stevie goes to the hospital, Malcolm tries making up every excuse he can think of to not go because he can’t face the truth about his illness. Meanwhile, back…

When Hal catches Dewey smoking, he makes a deal with him that he will stop drinking coffee if Dewey quits smoking.

During Grandma’s unwelcome visit with the family, she loses her leg while saving Dewey from a moving truck. Consumed with guilt, Dewey is determined to find his Grandmother’s leg and…

When Lois buys a brand-new king-sized bed, Hal thinks that her motive is to put more distance between them and refuses to sleep in it. Moved to tears by an…

When Malcolm spots a roughed up 1967 Cuda in his neighborhood, he instantly falls in love with it and purchases the car. But he gets so caught up in the…

Kitty returns and asks Lois for help getting Kitty’s estranged husband back; Francis comes home and puts Dewey through the torturous “Brotherhood Initiation.”

When Dewey’s annual candy selling event for school comes up, he uses the excuse of “these bars help support america” to sell them. Malcolm and Stevie attempt a science experiment,…

Hal sets up Abe Kenarben on a blind date with Jaime’s babysitter Polly but then realizes Lois has also set her up on a blind date – with Craig. Malcolm,…

Malcolm convinces Dewey to do poorly on an I.Q. test, so that he won’t become a ridiculed Krelboyne student. But Dewey does so badly that he is placed in a…

Lois blows her top over a hidden 15 percent ser charge in the bill at her family’s favorite pizza place and stages a boycott…but Hal and the boys are sneaking…

Malcolm gets a job working for Lois on the drugstore loading dock but is shocked to find that Lois smokes. She makes him promise not to tell, then turns her…

No one wants to tell Stevie his parents are getting a divorce, until Reese spills the beans.

Hal and the boys offer to watch baby Jamie so an exhausted Lois can finally get some sleep. Hal leaves the boys in charge while he goes to the Lucky…

Leonard (Jason Alexander), a cynical, genius chess player with no friends or job, makes Malcolm think he could grow into a similar adulthood. Determined to prevent this undesirable fate, Malcolm…

An academic competition faces the Krelboynes in an event Malcolm derides. Especially when he learns his teacher has a cheating plan. Also: a commitment to a formal dance ruffles Reese,…

Malcolm tries to emancipate Dabney from his overbearing mother while Hal invites his ne’er-do-well old buddy to the house. At the ranch, Francis is forced to share a room with…

After joining the basketball team at school, Malcolm soon finds himself under the coach’s skin due to his constant complaining, which eventually gets him kicked off the team. Determined to…

Brotherly love is lost on Malcolm and Reese, now out to sabotage his sibling’s birthday in devilish strikes met with crafty counterattacks.

Acting dumb like Reese eases Malcolm’s stress and lands him a date with the new light of his life, an attractive girl who’s really a dim bulb.

High school’s first day vexes Malcolm, who acquires an unfortunate nickname; and Hal, a parental “volunteer” running afoul of authority.

Back in the general school population, the Krelboyne whiz kids wind up in cliques with jocks, skateboarders and brooding “Goths.”

Girls in the house spell trouble for the boys, who are on their own while Dad’s hosting a poker game that’s more about one-upmanship than cards.

Clever Hal invigorates Dewey’s soccer team; sly Reese blackmails a philandering neighbor; obsessed Malcolm battles a computer program.

The return of the smart and sassy Cynthia rattles Malcolm, who’s astonished by her physical maturation. And so is drooling Reese.

In an effort to contribute to society and to make her boys useful at the same time, Lois “volunteers” Malcolm, Reese and Dewey for charity work at a local church….

Malcolm has a new light in his life: a perky classmate named Sara (whose face, in a quirky touch, is never shown). But, according to Malcolm , she’s “”good-looking and…

It’s still summer-vacation time on the jaunty third-season opener, which finds Malcolm and his rowdy clan cruising on a lake in a houseboat with Stevie and his straitlaced parents, Abe…

Malcolm, Dewey, Stevie, and Reese hide out at a traveling carnival after hours and run afoul of a determined security guard and several members of the freak show.

Malcolm and the Krelboynes tutor Reese, and uncover the real reason behind his failing grades.

A cooking class energizes Reese; a planned party irks Malcolm, whose brutal honesty hurts the hostess, Krelboyne Cynthia.

A hospital stay unsettles Malcolm, who’s stuck in a kids ward with what may be appendicitis. Meanwhile, at military school, Francis leads a hunger strike.

Malcolm becomes concerned with his future and his career. He takes an aptitude test, which doesn’t help because he finds out that he is equally excellently qualified to do anything….

Dewey starts carrying a purse to school. Francis’s friend Richie joins him at military school. Malcolm becomes a slave to an old woman in the neighborhood.

There’s a new girl in the Krelboyne class. Malcolm learns that his dull pencils were part of an elaborate yet unknown hazing. Cynthia is a fresh recruit from New York,…

Malcolm gets a role in the high school play and is so captivated by high school gossip that he forgets his lines. Lois discovers the joys of massage. Hal and…

Reese is suddenly the school hero when he joins the wrestling team, but after he gets thrashed by a girl wrestler, he misses that feeling of pride. He decides to…

Malcolm’s humiliation as a Krelboyne drives him crazy, so he fakes his way into seeing the school’s shrink, with whom the con continues.

Shenanigans abound at the fancy spot where the family’s dining with the Kenarbans, and at Francis’ school, where rowdy teenage girls are partying.

Francis visits the week after Halloween and helps his brothers in a trick that involves a giant slingshot with icky ammo. Hal tries to catch a mysterious hot-rodder.