In the dark silence of the sea during World War II, the submarine USS Tiger Shark prowls on what should be a routine rescue mission. But for the shell-shocked crew, trapped together in the sub's narrow corridors and constricted spaces, this is about to become a journey into the sensory delusions, mental deceptions and runaway fears that lurk just below the surface of the ocean.
A psychiatrist with intense acrophobia (fear of heights) goes to work for a mental institution run by doctors who appear to be crazier than their patients, and have secrets that they are willing to commit murder to keep.
Trapped within an eerie mist, the residents of Antonio Bay have become the unwitting victims of a horrifying vengeance. One hundred years earlier, a ship carrying lepers was purposely lured onto the rocky coastline and sank, drowning all aboard. Now they're back – long-dead mariners who've waited a century for their revenge.
Five young people wake up dead. Washed up by the tide they scramble to an abandoned beach house, soon realizing that the perpetual night and blasts of pain suggest this is some version of hell. Between in-fighting and attacks by a demonic shadow creature, they recall the collapse of the nightclub that brought them here - and begin seeing hope of a second chance in the cabin's two mysterious paintings...