A sexy summer weekend turns into a blood-soaked nightmare for a group of college students trapped on an island surrounded by voracious underwater predators in&nbsp;Shark Night 3D,&nbsp;a terrifying thrill ride from director David Ellis (The Final Destination, Snakes On a Plane),&nbsp;featuring a red-hot young cast including Sara Paxton (Superhero Movie,&nbsp;Last House on the Left), Dustin [...]