The CW network has released the synopsis for episode #207 of The 100, which you can check out below. The installment, titled “Long Into an Abyss,” is officially described as follows:
THE THIRD WAY — Abby (Paige Turco) is determined to find a way to protect her people from a coming attack by the Grounders, even if it means heading into unknown territory and leaving some captives behind. A worried Bellamy (Bob Morley) convinces Clarke (Eliza Taylor) to go with him to the drop ship, where he and Octavia (Marie Avgeropoulos) reveal a dangerous secret. Clarke comes up with a bold new plan to stop the Grounders’ attack, leading Abby to a desperate decision. Meanwhile, at Mount Weather, Jasper (Devon Bostick) and Monty (Christopher Larkin) begin to question the motives of their new friends, while Dr. Tsing (guest star Rekha Sharma) conducts a deadly experiment to determine how to make use of the captives. Thomas McDonnell, Ricky Whittle and Isaiah Washington also star.
The 100 “Long Into an Abyss” was directed by Antonio Negret and written by James Thorpe. The episode airs Wednesday, December 10, at 9pm on The CW.