A group goes to the crash site to look for survivors, but they don't find any on The 100 Season 1 Episode 10.
When they return to camp, they find a bloodied and tortured Murphy. He escapes from the Grounders and brings back an illness which infects many of the 100.
Octavia goes to Lincoln for a cure and finds out what the Grounders have planned. She returns to tell the others of another coming threat.
Raven suggests a solution to their problem and it's explosive!
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