"We Are Grounders - Part I"SHOULD WE STAY OR SHOULD WE GO - Clarke (Eliza Taylor) and Finn (Thomas McDonell) escape one dangerous situation only to find themselves faced with a new enemy. Bellamy (Bob Morley) makes a heroic move to save Jasper (Devon Bostick). Raven (Lindsey Morgan) faces a new danger, and Murphy (guest star Richard Harmon, "Bates Motel") finally gets his revenge. Meanwhile, those remaining on the Ark are coming to terms with the inevitable. Paige Turco, Isaiah Washington, Henry Ian Cusick, Marie Avgeropoulos and Chris Larkin also star. Dean White directed the episode written by Tracy Bellomo and Akela Cooper (#112).