Bellamy, Finn and Jasper head into Grounder territory to search for Octavia, as flashbacks show the siblings' difficult childhood on the Ark. Meanwhile, Raven finds out about Clarke and Finn.
Did You Know?
The title refers to Bellamy's sense of responsibility for Octavia. The phrase is based on Genesis 4:9 where Cain asks God "Am I my brother's keeper?" The popular use of that phrase is to disavow responsibility for "looking out for" someone else. See more
When Octavia first sees the moonrise there is a problem with scale. Given the curvature of the Earth, the Moon is a couple orders of magnitude too large. See more
Your sister, your responsibility.
When A Fire Starts To Burn
Performed by Disclosure See more