April Fool's Day (2008)

Each April Fool's Day, fabulously wealthy young Desiree Cartier hosts the most killer coming-out parties at her to-die-for southern mansion. And this social event is never complete without one of her patented pranks. But when this year's joke turns deadly, Desiree, her brother Blaine and five of their friends all become the targets of a twisted killer who begins hunting them down one by one in this chilling tale of seduction, betrayal and revenge.