Clara, found unconscious in her botanical lab, poisoned by a rare, fast-acting plant toxin, confirms the killer is escalating, using specialized knowledge to target individuals, and Evelyn realizes her own vulnerability to a murderer who understands their secrets and their strengths. As Clara is rushed to Alexander's secret medical bay, her hand, still clutching a wilting flower, spasms briefly, dropping a tiny, intricately folded paper crane that unfolds to reveal a single, unsettling word written in Clara's hand: 'Adrian'.