THE 100 Season 1 Episode 13 Photos We Are Grounders, Part 2 : THE END OF THE WORLD AS WE KNOW IT — Clarke (Eliza Taylor) pleads with Bellamy (Bob Morley) to do the right thing as conflict on the ground comes to a head. Bellamy forces Octavia (Marie Avgeropoulos) to make a difficult decision. Raven (guest star Lindsey Morgan) and Jasper (Devon Bostick) work against time and Finn (Thomas McDonell) makes a bold move. Meanwhile, the situation on the Ark comes to a stunning conclusion. Paige Turco, Isaiah Washington, Henry Ian Cusick and Chris Larkin also star. Dean White directed the episode written by Jason Rothenberg (#113).