The 100's fourth season finale is set to be the most heart-pounding yet as Clarke (Eliza Taylor) and the people of Earth must find a way to survive before the radiation wave hits. In crafting this season, creator Jason Rothenberg says his goal was to create a story in which the clock starts ticking in the premiere and never stops until the finale, which "unfolds is something almost close to real time," he explains. "It's like, '42 minutes and 8 seconds to the deathwave landing in our world and killing everybody.' And so it really feels breathless."
Fans can also expect the long-simmering storylines surrounding the Flame, the Second Dawn and Nightblood to be paid off by the time this season comes to a close. "There's a pretty powerful artificial intelligence in [the Flame] that might be helpful, and there are Nightbloods among us now," teases Rothenberg.
While the impending nuclear radiation means this finale will be the deadliest one ever in terms of the sheer number of people killed, Rothenberg refuses to say whether it will also be the deadliest finale for our main characters. He did, however, promise that this season won't end with another deus ex machina featuring Clark pulling a lever or pressing a button that conveniently saves the day at the last minute.
"It's a very different finale for sure," Rothenberg says. "Clarke's story in the finale is very different than what we've seen from her before. She's definitely being forced to rely on her friends more than she has in the past and accept that she can't do it all on her own. I won't say whether there's a level pulled or a button pushed -- there probably is in various ways -- but it's not quite as 'it all comes down to pulling a lever' as it has in the past."