The Tybee Post Theater is screening the independent horror flick filmed entirely on Tybee in 1982, “Slayer." The Theater, in its most decrepit state ever, stars as the primary location in the film. It’s the story of four young people vacationing on a barren island. One of them, a female artist, has dreams that depict ghastly murders. Sure enough, the fun begins when her boyfriend is found dead.