Unusual island, an

When Janine?s parents win a vacation to a private island, it?s the same week as her and her twin brother?s 16th birthday. Cool! She can?t wait to lounge on the beach and let the staff pamper her! Much to her disappointment, though, they leave the island to go sightseeing on a boat. Unlike the rest of her family, bouncing around the ocean isn?t her idea of fun. Even when her brother gets their dad to stop the boat to investigate the neon sea creature that he is sure is following them--nothing. Losing her new red hat is the highlight of her trip until an unexpected storm hits, and they shipwreck on an uncharted island. After tending to some wounds from the crash, they search the island in hopes of finding human civilization. Although they don?t find what they are looking for, it looks like they aren?t alone. When they return to their campsite---a fully cooked dinner is waiting for them! Why? And a better question is why did they eat it? It was as if they stepped into a fairytale-- or nightmare. Who is on the island with them and what did they want?