Will-o'-the-Wisp Lights Out : Season 4 Episode 6

Mr. Corbeau wants to turn pristine Beware Island into a gambling destination. His plans for building a connecting bridge to the natural paradise are continually delayed; his engineers all fall from the island's cliffs, led there by by a spirit, the Will-O'-The-Wisp. His greedy daughter, Marina, tries to manipulate her ex-fiancé into designing the bridge. Their visit there also proves fatal.