Butterfly (S01E03)

Cassie, the sole survivor of Sword and Cross, faces a terrifying creature. Meanwhile, Luce starts to believe that Howson is manipulating their memories, prompting her to swipe photos of herself and other residents undergoing a medical procedure they can't recall. As the residents embark on a hike, Howson commands that Cassie be taken back to Sword and Cross. Amidst this turmoil, Daniel and Luce grow closer as they attempt to unravel their hidden history. When Luce is attacked in the lake, they find themselves in the medical bay, where they break into a restricted area and are stunned by what they discover.