No matter what Clarke does, humanity is doomed.

That was essentially the lesson The 100 dealt out on Thursday night, capping off the season 3 with a bone-chilling doomsday proclamation for world's most resilient survivors. Earth is primed for another nuclear disaster, and it looks as if Clarke (Eliza Taylor) just destroyed mankind's only hope for survival.

Despite all of ALIE's (Erica Cerra) manipulations and machinations, this new threat will undoubtedly have a few City of Light devotees down on Clarke. Everyone else, however, will be looking for an explanation from Jaha (Isaiah Washington).

"There's going to be a lot of roads of repair for Jaha's character," Washington told E! Online ahead of Thursday's hour. "It's going to be interesting to see [what] the writers come with to hopefully get him somewhere because you'll see after [the finale] he takes a pretty hard fall. He's got a lot of 'splaning to do."

The lengths he went to in order to chip humanity combined with the deadly and self-sacrificing acts ALIE made her minion perform will clearly make Jaha undesirable No. 1 in both Arker and Grounder communities alike. Considering the Grounders' love of "blood must have blood," it's a safe bet that Jaha will have a bounty on his head once the people of Polis find a new leader.

Where will he run? With a dozen nuclear power plants ready to blow, The 100's universe is set to expand. Perhaps Clarke's efforts to save the world will open up brand new areas for Jaha and the Arkers to explore.

Do you think Jaha will ever find redemption? Find out when The 100 returns to The CW for season 4. Expect the drama to enter the lineup at midseason for a January through March run.

Click the video below to see a preview for the series' latest episode.

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