If you're interested in writing an essay on (assuming you mean the show), consider focusing on aspects like:
Marissa felt a surge of cold adrenaline. The lighthouse had been abandoned for years, a relic that locals whispered about in the same breath as the town’s darkest legends. It was said that a fire had once burned its lantern, and that the flames had revealed a hidden treasure—a cache of smuggled pearls that vanished with the last keeper’s disappearance.
