Episode 1
Driving
24m
Alex gets a job with Louis at his dad's distributing company so she can buy her own car.
Episode credits
Guest stars Louan Gideon, Tom Virtue
TV series
The Secret World of Alex Mack
1994TV-PG4 seasons7.8 / 10
Thanks to a dousing in a top-secret chemical from an overturned truck, teenager Alex Mack is given amazing powers that make her the envy of her sister and best friend... and the target of a search by the chemical company, which wants to find her at all costs.
Streaming, rental and purchase options
Where to watch in United States
Checked Jul 22, 2026
You can also buy it from Amazon and Apple TV. Use the direct links below to open the provider.
Synopsis
Thanks to a dousing in a top-secret chemical from an overturned truck, teenager Alex Mack is given amazing powers that make her the envy of her sister and best friend... and the target of a search by the chemical company, which wants to find her at all costs.
Season 4 episodes
Choose an episode, then use the watch options above for the show.
Where to watch The Secret World of Alex Mack
Episode 2
Green Day
24m
When Robyn joins an environmental group the donut shop is threatened and Alex's friendship with Gloria is tested.
Episode credits
Directed by Matt DearbornGuest stars Louan Gideon, Natanya Ross
Episode 3
Camping
24m
Junior camp counselor is a new role for Alex, and one for which she's not well-suited. She and Kelly get lost in the woods, are chased by a bear and learn the importance of two words: friendship and rescue. George remembers his own camp experiences with mixed emotions.
Episode credits
Guest stars Hilary Angelo
Episode 4
Ashley
24m
Aunt Ashley is everything Barbara isn't: fancy, outrageous, irresponsible, crazy. Alex's wild go-cart ride with her aunt forces Barbara to get tough with both of them. Alex's school work suffers while her spirits soar.
Where to watch The Secret World of Alex MackEpisode 5
Oscar
24m
Alex tries to rescue a chimp named Oscar from Vince by secretly keeping him as a pet. Annie is forced to tell George the truth about GC-161.
Episode credits
Guest stars Louan Gideon
Episode 6
Foot Fault
24m
While Louis is innocently taking a photo, he catches Alex's zapper-gone-wild on film. He's sure he's captured some kind of UFO that will make his footage famous. Meanwhile, Alex helps George overcome his fear of bowling.
Episode credits
Directed by Shawn LevyGuest stars Benjamin Kimball Smith
Episode 7
The Switch
24m
A morphing accident causes Alex to switch bodies with Barbara. Alex realizes that she's not ready for adulthood. Annie loses confidence about leaving home and talks to George about it.
Episode credits
Directed by Allison Liddi-BrownWritten by Neil LandauGuest stars Hilary Angelo
Episode 8
The Storm
24m
When Alex and Annie are stuck at home during a rainstorm, they reminisce about the value of superpowers and sisterhood.
Episode credits
Written by Ken LipmanGuest stars Hilary Angelo
Episode 9
Leaving
24m
Alex saves a woman's life but can't tell the authorities that she double-morphed the woman to the hospital. The mystery heightens Danielle Atron's suspicions. As Annie prepares for college, a bittersweet realization comes over the sisters who share so much.
Episode credits
Written by Ken LipmanGuest stars Louan Gideon, Natanya Ross
Episode 10
Senora Garcia
24m
Alex struggles in Spanish class with a tough teacher, then struggles with the possibility that she got the teacher fired. Lars sets Dave up to be the first human research specimen for dangerous GC-161.
Episode credits
Guest stars Louan Gideon, Natanya Ross
Episode 11
The Doctor
24m6.0 / 10
Alex has a doctor's appointment and fears her altered body chemistry will be discovered. Robyn grieves over the loss of her hamster.
Episode credits
Directed by Allison Liddi-BrownWritten by Matt DearbornGuest stars Natanya Ross
Episode 12
The Band
24m
Ray, Louis and Alex form a band and have to deal with issues of leadership, fame and competition. Robyn learns the ""rules"" of dating from Kelly.
Episode credits
Directed by Shawn LevyGuest stars Hilary Angelo, Natanya Ross
Episode 13
Things Change
24m
Ray is purposely mysterious about his new girlfriend, Rachel, so that Alex won't get jealous. Alex becomes jealous anyway and struggles with accepting a new friend.
Episode credits
Directed by Shawn LevyGuest stars Louan Gideon, Natanya Ross
Episode 14
The Return
24m
Alex becomes friends with the new boy in school, Hunter, who may know something about the GC-161 project.
Episode credits
Guest stars Louan Gideon, Will Estes, Natanya Ross
Episode 15
Friendly Fire
24m
Robyn moves in with Alex while her parents are away while Mr. Mack suspects that Dave may be his secret GC-161 informant.
Episode credits
Directed by Shawn LevyGuest stars Will Estes, Natanya Ross
Episode 16
Lies and Secrets
24m
When Hunter finds out about the GC-161 accident he starts searching for the GC-161 kid in order to expose the plant and uncover the truth about his father's disappearance.
Episode credits
Guest stars Louan Gideon, Will Estes
Episode 17
Without Feathers
24m
Alex plays matchmaker and sets Louis up with Hannah Mercury. Meanwhile, Ray gets a fancy new job and Alex falls in love with Hunter!
Episode credits
Guest stars Will Estes
Episode 18
24 Hours
24m
After coming to school like every day in her life, Alex notices that her parents, friends and teachers have started to act strangely. First she gets into detention with no reason and after escaping, everybody starts haunting her. But, what is really going on?
Where to watch The Secret World of Alex MackEpisode 19
Paradise Lost (1)
24m
After four years of keeping her powers hidden, Alex's secret world is falling apart. As the Plant prepares for the release of GC-161 to the public, her dad loses his job, and Louis discovers her secret powers, and is captured by the Plant.
Episode credits
Directed by Paul HoenWritten by Ken LipmanGuest stars Hilary Angelo, Louan Gideon, Will Estes
Episode 20
Paradise Regained (2)
24mfinale
The final episode. Ray, Louis, and Hunter try to free Alex and her parents from the Plant which is lined with bombs thanks to Danielle Atron. Meanwhile Dave works with Gino and the FDA to stop the chemical plant from releasing GC-161.
Episode credits
Written by Ken LipmanGuest stars Louan Gideon, Will Estes, Natanya Ross
Episode information updated Jul 24, 2026
More about The Secret World of Alex Mack
Cast
Larisa OleynikAlex Mack
Meredith BishopAnnie Mack
Darris LoveRay AlvaradoMichael BlakleyGeorge Mack
Dorian LopintoBarbara Mack
Alexis FieldsNicole Wilson
Louan GideonDanielle Atron
Charlotte RaeCredits
- Created by
- Thomas W. Lynch, Ken Lipman
- Written by
- Ken Lipman, Matt Dearborn, Peter Egan, Jack Kenny, Brian Hargrove, Neil Landau, Sean McNamara, Joe Purdy, Rick Gitelson
Production details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 78
- Original language
- English
Networks & production
NickelodeonUnited States- Tom Lynch CompanyUnited States
- Halcyon StudiosUnited States
Themes
middle schoolscientistsuperherosupernatural powerteen dramateenage girltelekinesistransformation
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