A former flame of Brennan's shows up asking for his help...and revealing that her son is Brennan's child.

Emma must go undercover to join a group of eco-terrorists run by another empath.

A psychotic New Mutant escapes from prison and goes after Adam, seeking revenge.

Adam is the target of an assassination league. After their first failure, he sends Shalimar to infiltrate the group but the situation quickly becomes dangerous for her.

The team must protect a defense witness against a New Mutant who can project his senses through others.

The team travel to an oil rig to fight a protocanth, a prehistoric reanimated humanoid that endangers all humanity.

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

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.

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.

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