The CW has released an official description with some spoilers for the Tuesday, July 7 episode of The 100.
The episode is called “What You Take With You” and you can find the description below.
UNLIKELY COMPANIONS – Bellamy (Bob Morley) must venture into enemy territory with an unlikely companion. Meanwhile, Octavia (Marie Avgeropoulos) is forced to confront her past. Eliza Taylor, Paige Turco, Lindsey Morgan, Richard Harmon, Tasya Teles and Shannon Kook star. The episode was directed by Marshall Virtue and written by Nikki Goldwaser (#609). Original airdate 7/9/2019.
UPDATE: We now have some preview images! Enjoy, and as always if you like the gallery please link to KSiteTV rather than copying the whole gallery onto Twitter or Tumblr.
UPDATE #2 (JULY 10): Even more photos are here!