Rachel and Dan want to go somewhere hot in January. Recently married and expecting their first baby, they decide on an island in the Caribbean. Why not turn it into a honeymoon, Dan says? A holiday in paradise. It ought to be perfect. Except that, for Rachel, it's not. Things take a sinister turn as soon as they arrive. As furniture shifts and objects fly around, as a waitress begs her to leave and a fellow guest makes her increasingly uneasy, Rachel realises everything she holds most dear is at stake and nothing is quite as it seems...