Clarke: Previously on "The 100"... Raven: Based on the new data, I'd say we have two months of survivability. Clarke: How many of us will the ship sustain? Raven: No more than a hundred. We just have to decide who gets to live here. Clarke: Arkadia is just Plan "B." It doesn't help the Grounders. I'm not stopping until we have a solution that saves everyone. Bellamy: If I'm on that list, you're on that list. Write it down, or I will. Clarke: Bellamy, I can't. Bellamy: Now we put it away and hope we never have to use it. Clarke: Nyko, what happened to them? Nyko: Sickness. Raven: We didn't treat her.