His Sister's Keeper

Synopsis

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.

Guest stars

Lindsey Morgan

Raven Reyes

Ricky Whittle

Lincoln

Terry Chen

Commander Shumway

Aaron Miko

John Mbege

Celia Reid

Roma

Monique Ganderton

Aurora Blake