***Undeservedly obscure atmospheric coastal horror*** Two couples in their 30s take a vacation to a secluded isle off the coast when a storm hits and people mysteriously start dying one-by-one. Kay, a troubled artist (Sarah Kendall), says she sees everything in her nightmares before it happens. I suppose “The Slayer” (1982), aka "Nightmare Island," could be classified as a slasher flick, butver mais...