“What Happens In Miami” (** out of four) was a stylish but empty teen thriller about a group of friends (Rachel Leryco, Annalisa Cochrane, Ashlei Sharpe Chestnut, and others) who go on Spring Break and one of them goes missing and they find themselves the prime suspects. Not the worst of its disreputable ilk and remains watchable throughout but is too unoriginal and uninspired to make a mark. Enough with movies by now about spring breakers getting into trouble.