The 100 is back on December 3rd with the episode 2×06 ‘Fog of War’, watch a sneak peek above and read the synopsis below:

Plot summary – THE CALM AFTER THE STORM Tensions run high between Clarke (Eliza Taylor) and Finn (Thomas McDonell), while Raven (Lindsey Morgan) discovers that Mount Weather is interfering with their communication systems. Meanwhile, Jasper (Devon Bostick) and Monty (Christopher Larkin) discover the truth about what’s going on at Mount Weather and Octavia (Marie Avgeropoulos) comes face-to-face with her worst nightmare. Finally, President Dante Wallace (guest star Raymond Barry) is about to be betrayed by those closest to him.   Paige Turco, Henry Ian Cusick, Isaiah Washington, Bob Morley and Ricky Whittle also star. Steven Depaul directed the episode written by Kira Snyder (#206). Original air date 12/3/2014.

https://www.youtube.com/watch?v=X_nZgK-fTYU