Season 4
While the world recovers from the global catastrophe of last season, a changed Mark struggles with guilt as he fights to protect his home and the people he loves, setting him on a collision course with a powerful new threat that could alter the fate of humanity forever.
Episodes
MAKING THE WORLD A BETTER PLACE
Mark battles enemies new and old in his fight to keep Earth safe.
I'LL GIVE YOU THE GRAND TOUR
Loyalties are challenged when an old enemy is revealed.
I GOTTA GET SOME AIR
Consequences weigh on Mark. Oliver takes on a new job.
HURM
Hurm.
GIVE US A MOMENT
Mark embarks on a new and dangerous mission, throwing Debbie into a tailspin and plunging Eve into uncertainty.
YOU LOOK HORRIBLE
Family bonds are put to the test. Under pressure, Allen makes a new friend.
DON'T DO ANYTHING RASH
Nothing goes according to plan during a massive confrontation.
DON'T LEAVE ME HANGING HERE
Mark confronts his darkest fears as his life changes forever.