Swamp Thing (1990)

S02E05 Better Angels

Ann Fisk, a scientist and ex-student of Alec Holland, has arrived in town. Her mentor, Carter LaRoche, plans to establish a recycling plant in the swamp, funded by Arcane. Unbeknownst to her, Ann must rely on a mysterious voice from the swamp to reveal a hidden malevolence that she has yet to comprehend.