The 100 - "Rubicon"

CHOOSE YOUR PATH WISELY — Tensions between Clarke (Eliza Taylor) and Abby (Paige Turco) come to a head after Clarke crosses the line.  Raven (Lindsey Morgan) helps Bellamy (Bob Morley) navigate Mount Weather.  Jaha (Isaiah Washington) and Murphy (guest star Richard Harmon) encounter a stranger who may not be what she seems.  Octavia (Marie Avgeropoulos) is prepared to fight for someone she loves.  Meanwhile, things reach a breaking point at Mount Weather.  Christopher Larkin, Ricky Whittle and Henry Ian Cusick also star.  Mairzee Almas directed the episode written by Aaron Ginsburg & Wade McIntyre.