Season 1
Pilot
Malcolm finds out he's a genius and get put in the special class.

Red Dress
It's Hal and Lois's anniversary and Lois bought a special dress just for the occasion. Then she finds it in the toilet, scorched. She assumes its the boys and tortures them until one of them confesses.

Home Alone 4
Lois and Hal are going to a wedding, so they let Francis come home to watch them. Malcolm overhears the parents talking about letting Francis come home if he does a good job. The boys TRY to be on their best behavior.

Shame
There is this really annoying kid that bugs Malcolm. He goes too far, so Malcolm beats him up. He feels bad once he finds out the kid is seven, so he trys to make up for it by entering a race.

Malcolm Babysits
The family has to stay in Craig's trailer while the house is being sprayed for bugs. Malcolm babysits for this rich family and is getting paid good, until he finds out they are spying on him.

Sleep Over
Malcolm and Stevie have a sleepover but Malcolm easily becomes bored. So they break out of the house and go to the arcade. That's where all the trouble starts. Reese wants to watch a Chucky movie, so he has to put Dewey to bed, (cruel punishment, huh?)

Francis Escapes
Francis leaves military school to meet his girlfriend. Malcolm has to keeep the secret, but it slips and he has to divert his mother so Francis isn't caught.

Krelboyne Picnic
The whole family has to go to Malcolm's special class's picnic. BIG mistake!

Lous vs. Evil
Lois loses her job because Dewey steals a $150 bootle of Cognac. In order to get her job back, she has to do some bad things. She refuses, then Hal gets sick. She asks for her job back and then exposes her boss for being a pervert. He resigns and she gets her job back.

Stock Car Races
Hal and the boys play hookie to attend a stock car race. Lois is at home, looking for her paycheck, (Hal has it.) While searching, she finds enough evidense to ground the boys for life.

Funeral
Lois's aunt dies and every one is planning on going until Malcolm complains. Lois says the family can do whatever they want. Malcolm can now go to the concert with Julie but when she comes, she sees him in his underwear and leaves.

Cheerleader
Reese falls in love with a cheerleader and is running out of ideas to..um..impress her. Idiotically, he joins the cheerleading squad.

Rollerskates
Malcolm takes skating lessons with Hal and kicks butt during his game.

Bots and the Bees
Lois goes to Francis in military school because his appendix ruptured. Malcolm and the Krelboynes build a robot, but Hal takes over the project and turns it into a Killer Robot!!!

Smunday
The boys are finished with there punishment when their mom is sick. She thinks it's still Sunday, so the boys stay home from school. Then they learn about Francis ratting them out.

Water Park
The family is going to Wavetown USA but Dewey can't go due to an ear infection. Dewey gets a mean (at first) babysitter. Malcolm and Reese fight the whole time at the park. Dewey accidentally gives the babysitter a heart attack and she dies. He runs after a balloon and gets lost.

Season 2
Traffic Jam
While coming home from the waterpark, a car jackknifes in front of them. Dewey is trying to get home. Reese is going nuts over an ice cream truck, Malcolm meets a cute girl, Lois is trying to open one lane, and Hal is trying to be good. Later, Malcolm finds out his dream girl is from Canada.

Halloween Approximately
Francis and the boys cause masses of destruction on their neighborhood to pay back for Francis missing Halloween.

Lois's Birthday
Lois gives the boys money to buy her a b-day present. They end up spending most of it on candy. She gets mad and leaves for thr batting cages.

Dinner Out
Malcolm and Stevie's families go out to dinner at a nice restaurant. Sounds like a recipe for... disaster.

Casino
The family goes on a vacation. The dad gets banned from the casino, so he takes a hike with Malcolm and Reese. They accidentally stumble onto an Army artillery range.

Convention
Lois and Hal go to a convention and leave the three boys with a babysitter. Reese and Malcolm try to win her over, but Dewey takes the gold in this event.

Robbery
Lois's store is held up by robbers while the boys and Hal accidentally infest the house with bats.

Therapy
Humiliation as a Krelboyne is driving Malcolm crazy, so he fakes his way into seeing the school screen, with which the con continues.

High School Play
Malcolm takes a role in a high school play. When performing, though, he forgets his lines and Lloyd saved him by saying them all.

The Bully
Reese starts wrestling and he's pretty good. Then he's beat by a..well..girl. Then his reign of bullying at the school stops...for a while at least.

Old Mrs. Old
Malcolm breaks an old ladies arm by accident and he has to work for her until the arm heals.

Krelboyne Girl
A new girl enters Malcolm's class and she likes him. She follows him around and sits with him at lunch. Then he pretty much tells her to go away and he realizes his true feelings for here.

New Neighbors
Malcolm's family gets new neighbors. Lois hates the mom, Malcolm hates the brother, Reese hates the very, very little sister, and Dewey hates the plastic garden gnomes. In the meantime, though, the dad and Hal are getting to be close friends.

Hal Quits
Hal quits his job to work on his dream painting.

The Grandparents
Malcolm's grandparents pay an unexpected and unwanted visit from Canada.

Traffic Ticket
The mom gets a ticket. She believes she didn't do anything wrong. When proof is shoved in her face that she's wrong she becomes sorta' nice.

Surgery
Malcolm has to go in for surgery because he has appendicidis. At home, the family bonds over a game of March and Conquer.

Reese Cooks
Cynthis has a party and Hal and Reese go to a cooking class to keep Reese out of trouble. He learns he has a thing for cooking.

Tutoring Reese
Malcolm has to tutor Reese to keep him out of a remeedial class. They find out that his teacher is out to get him when Malcolm takes one of his tests and it still gets a "F"

Bowling
Reese and Malcolm go bowling. Through-out the episode, it shows what could happen, depending on which parent takes them.