S3 E1 • L'espoir d'un lendemain

In the aftermath of disaster, the Mutant X team must deal with the death of one of their teammates, the disappearance of another, the return of Mason Eckhart, and the arrival of a mysterious mutant with an agenda of her own.

Première diffusion : 29 septembre 2003

S3 E2 • Le Tigre

The Mutant X team must stop the auction of a highly lethal substance that a number of notorious international terrorists are vying to acquire.

Première diffusion : 6 octobre 2003

S3 E3 • Parasite

The Mutant X team is brought in to help a military base that has become infected with a deadly disease.

Première diffusion : 13 octobre 2003

S3 E4 • Les yeux du monstre

The Mutant X team must stop a serial killer who leaves clues to his next victims in the form of puzzles.

Première diffusion : 20 octobre 2003

S3 E5 • Compte à rebours

When Lexa is unknowingly drugged with a lethal substance, the team must race to find the antidote before it's too late.

Première diffusion : 27 octobre 2003

S3 E6 • L'asile des chimères

The Mutant X team is called in to investigate bizarre activities occurring at a local hospital.

Première diffusion : 3 novembre 2003

S3 E7 • La main de dieu

The Mutant X team embarks on a mission to locate and capture a powerful super-mutant who possesses god-like powers.

Première diffusion : 10 novembre 2003

S3 E8 • Le fléau

Jesse is forced to reconnect with his former fiancé when the Mutant X team learns that her company is involved in the genetic manipulation of crops.

Première diffusion : 17 novembre 2003

S3 E9 • Les hologrammes

A revenge-seeking cybernetic mutant uses his powers to overtake Sanctuary's security system in a plot to destroy Mutant X.

Première diffusion : 12 janvier 2004

S3 E10 • Le jumeau

The Mutant X team learns about Lexa's estranged twin brother when he becomes the main target of an underground operation harvesting mutant organs.

Première diffusion : 19 janvier 2004

S3 E11 • Aller-retour

Brennan and the Mutant X team join forces with a time traveling mutant to diffuse a bomb threatening devastating consequences.

Première diffusion : 26 janvier 2004

S3 E12 • Projet « contact »

While Brennan and Shalimar investigate a mysterious plane crash, Lexa contemplates her future with the Mutant X team.

Première diffusion : 2 février 2004

S3 E13 • Le virtuose

As the Mutant X team fights to retrieve a formula hidden in a collection of artwork, Shalimar is given vital information from a mysterious source

Première diffusion : 9 février 2004

S3 E14 • Une vie normale

Mutant X tracks down a rogue scientist while Shalimar breaks away from the team to help Adam save the scientist and uncover the real bad guy.

Première diffusion : 16 février 2004

S3 E15 • Amis pour la vie

Brennan is forced to return to his criminal past when Mutant X discovers that his old partner is involved in stealing secrets from the Dominion.

Première diffusion : 23 février 2004

S3 E16 • L'âge de l'innocence

Mutant X unearths an old military experiment involving an age-reversal serum and is surprised to discover that Jesse's grandfather is a one of the test subjects.

Première diffusion : 5 avril 2004

S3 E17 • L'implant

Discovering that their teammate Lexa is the subject of a covert experiment that is controlling her, the Mutant X team hunts for the doctor responsible.

Première diffusion : 12 avril 2004

S3 E18 • L'entre deux

When Jesse's life hangs in the balance, Brennan must connect to him and lead him through past memories they've shared in order to save his life.

Première diffusion : 19 avril 2004

S3 E19 • Filles de rêve

Mutant X must stop a scientist from cloning women for use as slaves in his ultra-exclusive men's club.

Première diffusion : 26 avril 2004

S3 E20 • La prophétie

Brennan battles with a Guardian of the Prophecy to stop the late mutant Ashlocke's plan from beyond the grave of world domination.

Première diffusion : 3 mai 2004

S3 E21 • Le cirque des merveilles

Lexa's suspicions lead Mutant X to unveil a traveling death camp, which is posed as a circus for mutant refugees and Mutant X's enemy within the Dominion.

Première diffusion : 10 mai 2004

S3 E22 • Le créateur

The team uncovers many of the mysteries surrounding Mutant X after the Dominion captures Lexa and Jesse.

Première diffusion : 17 mai 2004