I saw the movie because Umberto Lenzi was its director. Umberto is one of my favorite directors, however, I was disappointed seeing this movie. There is some innovative murders in this (electric chair tied to a bike), but whole plot is so disjointed that it seems like they just stitched few scenes together without thinking of inter-transition. You won't feel any emotional attachment with any of the characters in movie. Not unwatchable, but you won't miss anything if you give this one a slip.
Review of Nightmare Beach
