“Dead Sea” (*1/2 out of four) was a lethargic suspense thriller about a young woman (Isabel Gravitt) and her friends (Genneya Walton and Audriana Volken) who are stranded at sea and are picked up by a group of boatmen (Dean Cameron and Alexander Wraith) but soon realize they have been kidnapped and sold in potential sex slavery and have to fight back to survive. Plodding and familiar story doesn’t have enough scares or tension to make it remotely worthwhile. Nice to see Cameron again but clunkers like this make you think he should have stayed in “Summer School.” Watch “Dead Calm” again instead.