FOX | 8:00 pm
Stopping Dr. Campbell (guest star Garret Dillahunt) from making his anti-mutant initiative a national cause is the mission for many of the major characters in the series’ two-hour season finale, combining the episodes "eXtraction" and "X-roads." As Polaris (Emma Dumont) makes discoveries and a big decision, the mutants’ headquarters is targeted. Skyler Samuels and Sharon Gless also reprise their guest roles. Stephen Moyer, Amy Acker, Sean Teale and Jamie Chung also star.