The family attends the counterculture Burning Man festival in the desert.
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Directed by Peter LauerWritten by Michael GloubermanGuest stars Jeff Doucette, Rosanna Arquette, India King, Cece Tsou, Kim Shannon, Atticus Todd, Rebecca Metz, Elijah Anarchist
When Hal forgets to pay the family's health insurance, the company will not reinstate it until Monday, so he panics and locks the boys in their room to keep them from getting hurt.
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Directed by Steve WelchWritten by Rob UlinGuest stars Tara Karsian, David Anthony Higgins, Scott Adsit, Richard V. Licata, Wes Robinson, Diana Murphy, Laura Hayes, Preston Shores
Reese and Malcolm try to perform the ultimate Halloween prank.
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Directed by David D'OvidioWritten by Andy BobrowGuest stars Alex Weed, Daylon Reese, David Anthony Higgins, Jack Axelrod, Rob Elk, Rose Abdoo, Reggie Jordan, Margarita Franco
When Malcolm gets paired with a dimwitted beauty as his chemistry partner, he thinks it's a recipe for disaster, but when she reveals her feelings for him, sparks fly. They agree to keep their romantic experiment under wraps until Malcolm realizes that she's just embarrassed to be dating him. Meanwhile, Lois demands that Reese get a job, and she kicks him out of the house to prove that she means business.
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Directed by Peter LauerWritten by Gary MurphyGuest stars Hayden Panettiere, Erik von Detten, Harold Sylvester, Sarah Wright, Larry Polson, Perry D'Marco
Francis decides to surprise the family by coming home, and the power goes out in the house. Meanwhile, it's Lois who's in the dark when Hal decides to cancel their anniversary dinner in favor of a Reese-cooked meal at home. And Malcolm ends up in hot water after he sneaks three Dutch girls into the house.
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Directed by Steve WelchWritten by Eric KaplanGuest stars Anastasia Baranova, Julia Levy-Boeken, Ellen Hollman
When Lois finds renewed energy with orthotic inserts for her shoes, Hal fears she will not look to him for support anymore and plots to destroy the inserts. A former female army buddy of Reese's comes to their house for a visit. But she gets defensive when Reese thinks they are way more than just friends and comes intact to the idea of trying to sleep with her.
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Directed by Peter LauerWritten by Neil ThompsonGuest stars Larisa Oleynik
Lois thinks the new babysitter she found for Jamie is perfect... until she starts driving Lois crazy. Meanwhile, Reese starts getting picked on by the teacher when he and Malcolm are in the same class. However, Malcolm decides to defend him.
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Directed by Bryan CranstonWritten by Matthew CarlsonGuest stars Vanessa Marano, Chris Eigeman, Mimi Cozzens, Kathryn Joosten, Kevin Will, Fiona Hale, Tom Lent, Steve Vinovich
Malcolm receives a check for $10,000. After Hal and Lois find out, they decide to keep the money and spend it on something for themselves. However, when Dewey overhears this, he wants to get in on it, too. Now, they'll have to find a way to pay Malcolm back.
Episode credits
Directed by Steve LoveWritten by Michael GloubermanGuest stars Perry Anzilotti, Murray Rubin, Gloria LeRoy, Tangelia Rouse, Lillian Adams, Alanna Masterson, Marcus Toji, Dan Olivo
Lois, Hal, and Dewey go out of town for a piano competition, so they get Ida to watch over Malcolm and Reese while they're gone. Since Ida thinks Reese needs to become a man, she comes up with a competition for Malcolm and Reese, and if Reese wins, he can take Raduca as his bride. Now, when Lois and Hal return, they're surprised to find out that Reese has run away to Las Vegas to get married.
Episode credits
Directed by Linwood BoomerWritten by Rob UlinGuest stars Cloris Leachman, Yvette Nicole Brown, Hayley DuMond, Michael Yama, James Henriksen, Doug Ballard, Nikki Tyler-Flynn, Kathleen Garrett
A broke Francis gets talked into getting a real job by Dewey, but one of Francis' rocker friends decides to offer him the position of tour manager of his band instead. Back home, Hal takes over the college recruiters, which Malcolm refuses to meet with, and treats each one as a suitor. However, Hal's plans are ruined when Malcolm chooses to go Harvard.
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Directed by Peter LauerWritten by Jay KogenGuest stars Josh Hammond, Roark Critchlow, Rheagan Wallace, James McCauley, Scott Klace, Pete Gardner, Reid Collums
Lois discovers she has mono after a visit to the doctor. She then ends up giving it to Malcolm after her maternal instincts begin. As a result, both Lois and Malcolm are forced to spend an entire day and night together in the same room. Hal, meanwhile, is invited to all of his neighbors' parties after they know Lois will not be attending any of them.
Episode credits
Directed by David D'OvidioWritten by Andy BobrowGuest stars Stuart Fratkin, Kathleen York, Brian Palermo, Frank Crim, Johanna McKay
Hal learns that his father has passed away, but sheds no tears and passes it off as nothing since he never knew him. So, to make sure nothing like that happens again, he lets the boys do whatever they want by letting them miss school and even offering to buy Malcolm a new car, until Lois puts a stop to it. Noticing how depressed Hal has become, his friend Abe brings George Takei over for a visit in an attempt to cheer him up.
Episode credits
Directed by Christopher MastersonWritten by Eric KaplanGuest stars Nolan North, George Takei, Maurice Godin, Kevin Michael Richardson, Gary Anthony Williams
Francis receives a visit from Lois and Hal to celebrate his one-year anniversary of sobriety. However, when they attend one of his A.A. meetings, it's revealed that it was Lois who forced him to start drinking. Back home, Dewey finds Hal's spare key for his car and tries to get Malcolm and Reese to drive him to the arcade, but, of course, they refuse.
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Directed by Steve WelchWritten by Alan J. HigginsGuest stars Stephen Lee, Emy Coligado, James Geralden, Matthew Willig, George McQuade
When four popular high school girls play an evil prank on Reese by pretending he has a secret admirer and then dropping a pig off at his front door, Lois comes to his rescue. She plots her revenge on the four unsuspecting girls and wreaks havoc on their adolescent lives. Meanwhile, Hal realizes Lois is at a dangerous emotional place so he decides to get some distance and stumbles upon the idea for making his own pitching machine out of stuff in the garage.
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Directed by Alex ReidWritten by Gary MurphyGuest stars Amy Davidson, Christel Khalil, Danielle Savre, Rick Zieff, Steve Vinovich, Diane Robin, Chancellor Miller, Jarod Einsohn
Hal's friend Trey tells him to come to his dental office when he looses a tooth during a poker game, but their friendship becomes in jeopardy when Hal's faced with a $2,000 bill and causes a fight between them. Reese, meanwhile, teaches Lois how to ride a bike, while Malcolm and Dewey find sleeping as their new favorite pastime.
Episode credits
Directed by Steve LoveWritten by Jay KogenGuest stars Michaela Watkins, Dan Martin, Alex Morris, Edward James Gage, Jonathan Craig Williams, Paul Rae, Scott Director, Danny Chambers
Malcolm joins a local dance class to impress a girl, but when she loses her footing, he realizes that to win the competition he'll need a partner who can step it up. Dick, a rival student in the class who takes dancing a bit too seriously, challenges Malcolm to a dance-off. Meanwhile, Hal discovers an underground bachelor pad in the backyard.
Episode credits
Directed by Matthew CarlsonWritten by Rob UlinGuest stars Suzie Pollard, Lynsey Bartilson, Mark DeCarlo, Sandra Purpuro, Sonya Eddy, Ryan Raftery, Wendy Worthington, Karen Russell
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 home, Hal gets highly competitive about his new remote control boat, while Lois thinks she's going insane.
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Directed by Steve WelchWritten by David Ihlenfeld, David WrightGuest stars Zach Mills, Jan Hoag, Craig Lamar Traylor, Terry Rhoads, Kevin Brief, John Balma, Brooks McBeth, Scott Francisco
Reese meets a cute vegetarian named Carrie when he goes back to work at the meat plant. At first, he goes along with her political talk, but she catches him with a pork chop. So, to get Carrie back, he sets free all the cows at the meat plant. Malcolm, meanwhile, tries to fool Lois in order to attend a rock concert.
Episode credits
Directed by Peter LauerWritten by Michael GloubermanGuest stars Tara Lipinski, Alec Medlock, Nestor Serrano, David Anthony Higgins, Michael Robert Berger, Mildred Dumas
For the senior prom, Reese gets paid to take Janine, a studious girl in class, but only after she gives him a makeover and sends him to finishing school, while Malcolm aligns with the unpopular kids to form an anti-prom they call "Morp." Unfortunately, while Malcolm and his friends protest the official dance, they don't know how to make their "Morp" exciting. Meanwhile, Dewey discovers there aren't any childhood pictures of him, so he concocts an elaborate scavenger hunt to punish Hal and Lois.
Episode credits
Directed by David D'OvidioWritten by Gary MurphyGuest stars Caitlin Crosby, Amy Halloran, Scarlett Lam, Shanna Collins, Jeff Braine, Kate Micucci, Adam Rose, Samantha Streets
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 him to become President of the United States. Meanwhile, Reese does everything he can to get a permanent job as a high school janitor, which includes creating the most disgusting mess ever. In the meantime, Hal has problems with Malcolm's Harvard tuition, while Francis finally gets a real 9-5 job that he actually enjoys. Also returning for the family celebrations is Grandma Ida, as they all say goodbye to Malcolm when he leaves for college.
Episode credits
Directed by Linwood BoomerWritten by Michael GloubermanGuest stars Lamont Thompson, Cloris Leachman, Craig Lamar Traylor, Emy Coligado, David Anthony Higgins, Gary Anthony Williams, Linwood Boomer, Steve Vinovich