The 100 6×12 “Adjustment Protocol” Season 6 Episode 12 Sneak Peek – CHANGES – A special Naming Day changes everything in Sanctum. Gabriel (guest star Chuku Modu) comes face to face with an old friend. Eliza Taylor, Bob Morley, Paige Turco, Marie Avgeropoulos, Lindsey Morgan, Richard Harmon, Tasya Teles and Shannon Kook star. The episode was directed by Antonio Negret and written by Kim Shumway (#612). Original airdate 7/30/2019.