College dropout Randall (Noah Le Gros) brought his career-minded girlfriend Emily (Liana Liberato) to his parents' Cape Cod vacation home to sort out their future. Unexpectedly having to share the weekend with kindly friends (Jake Weber, Maryann Nagel) of his folks, none were prepared for the odd glowing microbes that began to permeate the air and water-or for the horrific consequences as they proceeded on their infectious course, in this stunning, slow-boil shocker. 88 min. Widescreen; Soundtrack: English.