Season 4
8 episodes · Mar 18, 2026
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.
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S4E1MAKING THE WORLD A BETTER PLACE
Mar 18, 202653mMark battles enemies new and old in his fight to keep Earth safe.
S4E2I'LL GIVE YOU THE GRAND TOUR
Mar 18, 202651mLoyalties are challenged when an old enemy is revealed.
S4E3I GOTTA GET SOME AIR
Mar 18, 202649mConsequences weigh on Mark. Oliver takes on a new job.

S4E5GIVE US A MOMENT
Apr 1, 202652mMark embarks on a new and dangerous mission, throwing Debbie into a tailspin and plunging Eve into uncertainty.
S4E6YOU LOOK HORRIBLE
Apr 8, 202653mFamily bonds are put to the test. Under pressure, Allen makes a new friend.
S4E7DON'T DO ANYTHING RASH
Apr 15, 202654mNothing goes according to plan during a massive confrontation.
S4E8DON'T LEAVE ME HANGING HERE
Apr 22, 202652mMark confronts his darkest fears as his life changes forever.