SOME LIKE IT HOT — While preparing for battle, Clarke (Eliza Taylor) and Lexa (guest star Alycia Debnam Carey) have a heated discussion.  Desperate for help, Raven (Lindsey Morgan) has Wick (guest star Steve Talley) summoned to the engineering room.  Jaha (Isaiah Washington) and Murphy (guest star Richard Harmon) encounter a perilous roadblock.  Meanwhile, at Mount Weather, Bellamy (Bob Morley) is in a race against time.  Marie Avgeropoulos also stars.  Uta Briesewitz directed the episode written by Kim Shumway.