The July 23 episode of The 100 is called “Ashes to Ashes” and it is directed by series star (and Eliza Taylor’s husband!) Bob Morley.
The CW has released an official description for the episode which you can find below. There aren’t a lot of spoilers, but hey, maybe there will be some in the preview images.
EPISODE WAS DIRECTED BY BOB MORLEY – Bellamy (Bob Morley) and Octavia (Marie Avgeropoulos) must work together to save their friends. Echo (Tasya Teles) is forced to face her past. Eliza Taylor, Paige Turco, Lindsey Morgan, Richard Harmon and Shannon Kook star. The episode was directed by Bob Morley and written by Charmaine DeGrate (#611). Original airdate 7/23/2019.
UPDATE: We now have some photos! Find them in the gallery below.
UPDATE #2 (7/24/2019): Now that the episode has aired, The CW has released even more photos!